Choosing the best Shopify bundle app is not just about finding the tool with the most features. The right app depends on the bundle strategy you want to launch, how much control you need over the storefront experience, whether your inventory setup is simple or complex, and how quickly you want to increase AOV.
For a small store, the best bundle app might be a lightweight quantity breaks widget that takes five minutes to publish. For a growing brand, it might be a mix-and-match bundle builder with BOGO offers, free gifts, product add-ons, and analytics. For a larger operation, the deciding factor might be inventory sync, SKU breakdown, POS support, or 3PL compatibility.
This guide compares the best Shopify bundle apps for 2026 by use case, bundle types, pricing model, setup experience, and growth fit, so you can choose the right tool before you create product bundles or test advanced quantity breaks. You will also see where Shopify's native bundle app is enough, where a dedicated bundle app makes more sense, and which app is the best fit for common goals like volume discounts, mix-and-match bundles, free gift campaigns, and frequently bought together offers.
TL;DR: Best Shopify Bundle Apps at a Glance
| App | Best for | Main bundle types | Free option | Starting paid price |
|---|---|---|---|---|
| V Bundles | AOV-focused bundles, quantity breaks, BOGO, gifts, and sticky offers | Quantity breaks, volume discounts, BOGO, free gifts, mix-and-match, FBT, subscriptions | Free to install for development stores | $9.99/month |
| Kaching Bundles | Established quantity breaks and product-page bundles | Quantity breaks, volume discounts, BOGO, FBT | Free to install for development stores | $14.99/month |
| Fast Bundle | Broad all-in-one bundling | Mix-and-match, BOGO, FBT, add-ons, volume discounts | Free to install for development stores | $19/month |
| Bundler | Budget-friendly bundle testing | Fixed bundles, volume discounts, mix-and-match, BXGY | Free plan | $9.99/month |
| Simple Bundles | Inventory sync, fulfillment, 3PL workflows | Fixed, multipacks, mix-and-match, B2B, subscriptions | Free plan | $14/month |
| BOGOS | Free gifts, BOGO, and promotion-heavy bundles | BOGO, BXGY, free gifts, mix-and-match, build-a-box | Free plan | $29.99/month |
| Wide Bundles | Visual quantity breaks with A/B testing | Quantity breaks, BOGO, mix-and-match, volume discounts | Free to install for development stores | $14.99/month |
| Zoorix | Bundles plus cross-sell in product page and cart | Volume discounts, bundles, mix-and-match, cart cross-sell | Free plan | $7.99/month |
| Amplify | Visual bundle builders and higher-budget stores | Bundle builder, kits, BOGO, quantity breaks, FBT | Free trial | $99.50/month |
| Shopify Bundles | Official Shopify app for simple fixed bundles | Fixed bundles, multipacks | Free | Free |
Data note: Pricing, ratings, and plan limits change often on the Shopify App Store. Use this guide as a practical decision framework, then verify each app's current listing before installing.
How We Compared These Shopify Bundle Apps
Star ratings matter, but they do not show whether a Shopify bundle app fits your actual store. For this review, we compared each app by merchant use case, bundle type coverage, setup speed, storefront experience, pricing model, inventory fit, and AOV features.
- Bundle type coverage: Fixed bundles, quantity breaks, mix-and-match, BOGO, free gifts, product add-ons, frequently bought together, and subscription bundles.
- Setup speed: How quickly a non-technical merchant can create the first offer.
- Storefront experience: Mobile layout, theme fit, customization, and widget quality.
- Pricing model: Flat, order-based, revenue-based, Shopify-plan-based, or free with limits.
- Inventory and fulfillment fit: SKU-level inventory, POS, 3PL, WMS, and subscription workflow support.
- AOV features: Upsells, cross-sells, progress bars, sticky add-to-cart, analytics, and A/B testing.
The goal is to help you choose the best Shopify bundle app for your current growth stage and bundling strategy.
1. V Bundles App Upsell & Cross Sell
Best for: Shopify merchants who want one no-code app for quantity breaks, volume discounts, BOGO, free gifts, mix-and-match bundles, frequently bought together, subscriptions, and sticky add-to-cart offers.
Pricing: Free to install for development stores. Starter plan from $9.99/month.
Rating: 5.0 stars on the Shopify App Store at the time of review.
V Bundles is built for merchants who want to increase average order value without making their product pages feel overloaded. Instead of focusing on a single bundle format, it combines the most common AOV plays into one app: quantity breaks, volume discounts, BOGO offers, free gifts, product add-ons, mix-and-match bundles, frequently bought together recommendations, subscriptions, and sticky add-to-cart.
That makes it especially useful for stores that want to test different bundle strategies over time. You might start with a simple "Buy 2, Save 10%" quantity break, then add a free-gift threshold, then test a mix-and-match bundle for a seasonal campaign, and finally add a sticky add-to-cart bar for mobile shoppers.
Key features
- Quantity breaks and volume discounts
- BOGO, Buy X Get Y, and free gift campaigns
- Mix-and-match bundle builder
- Frequently bought together and cross-sell offers
- Product add-ons and cart upsells
- Subscription bundle support
- Sticky add-to-cart button
- Countdown timer and urgency tools
- 120+ native bundle themes, styles, and badges
- Multi-language support, including English, Spanish, German, Italian, French, Dutch, Portuguese, and Turkish
- Integrations with Shopify Checkout, Shopify Admin, popular page builders, and cart drawer tools
Why V Bundles stands out
The biggest advantage of V Bundles is that it is designed around practical AOV growth, not just bundle creation. Many apps help you create a bundle, but you still need separate tools for add-ons, free gifts, urgency, or sticky add-to-cart. V Bundles brings these conversion features together so merchants can launch offers faster and maintain a consistent storefront experience.
It also works well for stores that want product-page bundle widgets to feel native. This matters because bundle widgets that look like third-party popups can reduce trust, especially on mobile. With V Bundles, merchants can customize layouts, badges, text, and styles so the offer blends into the store.
Pros
- Strong feature coverage for AOV-focused stores
- Works for both simple and advanced bundle strategies
- Useful for quantity breaks, BOGO, free gifts, and mix-and-match in one app
- Lower starting price than many all-in-one bundle apps
- Native-looking templates and mobile-friendly offer layouts
- Good fit for merchants who want to test multiple offer types without installing several apps
Cons
- Review volume is still smaller than that of older competitors
- Merchants with highly complex 3PL or enterprise inventory workflows may need a specialized inventory-focused app
- Stores that only need very basic fixed bundles may be able to start with Shopify's free native app
Verdict
V Bundles is a strong choice if your main goal is to increase AOV with practical, conversion-focused bundle offers. It is especially useful for stores that want quantity breaks, volume discounts, BOGO, free gifts, and product add-ons without needing separate apps for each tactic. It also fits merchants using bundles as part of a broader plan to improve AOV, rather than a one-off discount widget.
2. Kaching Bundles App & Upsells
Best for: Merchants who want mature quantity breaks and a product bundle app with a large review base.
Pricing: Free to install for development stores. Paid plans start at $14.99/month.
Rating: 5.0 stars with 4,000+ reviews at the time of review.
Kaching Bundles is one of the most visible apps in the Shopify bundle category. It focuses heavily on quantity breaks, product bundles, upsells, and product-page offers. For merchants looking for a proven app with a large user base and a strong Shopify App Store reputation, Kaching is a natural choice.
The app supports many offer types, including fixed bundles, mix-and-match, quantity breaks, volume discounts, BOGO, subscriptions, wholesale pricing, product add-ons, frequently bought together, and AI recommendations. It also includes analytics such as A/B testing and conversion tracking.
Key features
- Quantity breaks and tiered pricing
- Volume discounts
- Fixed bundles and multipacks
- Mix-and-match bundles
- BOGO and free gifts
- Product add-ons and FBT recommendations
- A/B testing
- Multi-language and multi-currency support
- Drag-and-drop editor and custom rules
Pros
- Large review base and strong reputation
- Good for quantity breaks and product-page bundles
- Supports many advanced pricing formats
- Built for Shopify status
- Useful analytics and testing features
Cons
- Starting plan is higher than V Bundles
- Revenue-based plan limits can become a consideration as bundle revenue grows
- Some merchants may find the feature set more than they need for simple campaigns
Verdict
Kaching is a strong option for stores that want a well-known quantity breaks app with many reviews and a polished product-page bundle experience. It is especially worth comparing if quantity breaks are your primary offer type.
3. FBP Fast Bundle Product Upsell
Best for: Merchants who want a broad bundle app with mix-and-match, BOGO, add-ons, AI frequently bought together, and multiple placement options.
Pricing: Free to install for development stores. Paid plans start at $19/month.
Rating: 5.0 stars with 2,500+ reviews at the time of review.
Fast Bundle is a full-featured Shopify bundle app that covers many common bundle and upsell scenarios. It supports mix-and-match bundles, BOGO, Buy X Get Y, free gifts, fixed bundles, build-your-own bundles, product add-ons, AI-powered frequently bought together, and POS placements.
This makes it a good fit for merchants who want a dedicated bundling platform and expect to run multiple campaign types throughout the year.
Key features
- Mix-and-match bundles
- Volume discount upsells
- BOGO and Buy X Get Y
- Frequently bought together recommendations
- Product add-ons
- AI bundle image generator
- Product page, cart, and POS placement
- Templates and customization options
Pros
- Broad feature coverage
- Strong review base
- Good for merchants testing multiple bundle types
- AI-powered FBT and bundle image tools
- Useful for stores that want product-page, cart, and POS bundling
Cons
- Paid plans start higher than some competitors
- Pricing scales based on monthly bundle sales
- Feature depth may be more than needed for merchants who only want simple quantity breaks
Verdict
Fast Bundle is one of the strongest all-in-one Shopify product bundle apps for merchants who need broad bundle-type coverage. If your store is likely to use mix-and-match, FBT, BOGO, add-ons, and product-page bundles together, it deserves a close look.
4. Bundler - Product Bundles App
Best for: Small stores and early-stage merchants that want to test bundles without a high monthly cost.
Pricing: Free plan available. Paid plans start at $9.99/month.
Rating: 4.9 stars with 2,000+ reviews at the time of review.
Bundler is one of the most budget-friendly apps in the bundle category. It offers a genuinely useful free plan and supports key bundle types, including fixed bundles, quantity breaks, volume discounts, Buy X Get Y, product-page upsells, and Shopify POS.
The paid plans unlock more advanced features such as mix-and-match, tiered mix-and-match, custom landing pages, funnel upsells, bundle analytics, and AOV reporting.
Key features
- Fixed bundles
- Quantity breaks and volume discounts
- Buy X Get Y
- Product-page upsells
- Shopify POS support
- Mix-and-match on paid plans
- Custom landing pages
- Funnel upsells and analytics on higher plans
Pros
- Very accessible pricing
- Useful free plan
- Good fit for new stores and small businesses
- Supports important bundle types without enterprise pricing
- Works well for merchants testing product bundling for the first time
Cons
- Advanced features require paid plans
- Design and merchandising depth may be lighter than premium apps
- Stores with complex bundle logic may outgrow it
Verdict
Bundler is a strong starter option. If you are not sure whether bundles will work for your store yet, it gives you a low-risk way to test fixed bundles, volume discounts, and basic bundle campaigns.
5. Simple Bundles & Kits
Best for: Stores that care deeply about SKU-level inventory, fulfillment, POS, 3PL, WMS, B2B, and subscription workflows.
Pricing: Free plan available. Paid plans start at $14/month.
Rating: 4.8 stars with 700+ reviews at the time of review.
Simple Bundles is different from many frontend-heavy bundle apps. Its biggest strength is operational accuracy. It is designed to break bundles into individual SKUs for order fulfillment and inventory sync, making it especially useful for stores with complex backend workflows.
It supports mix-and-match bundles, subscription bundles, BOGO free gifts, volume discounts, single- and multi-SKU bundles, build-your-own bundles, B2B multipacks, AI-suggested bundles, POS, ERP, WMS, and 3PL integrations.
Key features
- SKU-level bundle breakdown
- Real-time inventory sync
- Mix-and-match bundles
- Subscription bundles
- BOGO and free gifts
- Volume discounts
- Build-your-own bundles
- B2B multipacks
- POS, ERP, WMS, and 3PL integrations
- Advanced analytics
Pros
- Excellent for complex inventory and fulfillment setups
- Good for stores using 3PLs, WMS, POS, or B2B workflows
- Supports advanced bundle types and subscriptions
- Helpful when operational reliability matters more than flashy widgets
Cons
- Not the simplest option for merchants who only need basic quantity breaks
- Some stores may prefer a more conversion-widget-focused app
- Pricing increases by Shopify plan level
Verdict
Simple Bundles is one of the best Shopify bundle apps for operational complexity. If your biggest concern is inventory accuracy, SKU breakdown, fulfillment, and backend reliability, it may be a better fit than a purely conversion-focused bundle widget.
6. BOGOS: Free Gift Bundle Upsell
Best for: Merchants who want bundles as part of a broader promotion engine with free gifts, BOGO, BXGY, and targeting rules.
Pricing: Free plan available. Paid plans start at $29.99/month.
Rating: 5.0 stars with 3,000+ reviews at the time of review.
BOGOS is not just a bundle app. It is a promotion engine focused on free gifts, BOGO, Buy X Get Y, volume discounts, frequently bought together, mix-and-match, classic bundles, and thank-you page upsells.
This makes it particularly useful for stores that run frequent campaigns. For example, a beauty store might run "Buy 2, Get a Free Mini," a fashion store might offer "Buy Any 3, Get 20% Off," and a seasonal gift store might run a build-a-box offer with tiered rewards.
Key features
- BOGO and Buy X Get Y
- Free gift with purchase
- Classic bundles
- Mix-and-match bundles
- Volume discounts
- Frequently bought together
- Thank-you page upsells
- Fully customizable UI
- Real-time analytics
- POS and mobile app support on paid plans
- Checkout upsell and headless/Hydrogen support on Plus plan
Pros
- Strong for promotional bundling
- Good for gift-with-purchase and BOGO campaigns
- Large review base
- Useful targeting and campaign controls
- Can replace multiple promotion apps for some stores
Cons
- More expensive than simpler bundle tools
- The feature set may feel heavy if you only need quantity breaks
- Order-based pricing needs monitoring as volume grows
Verdict
BOGOS is a strong choice if bundling is part of a larger promotion strategy. It is not the lightest app, but it is powerful for stores that rely on gifts, BOGO, BXGY, and campaign-based merchandising.
7. Wide Bundles - Quantity Breaks
Best for: Merchants who want highly customizable product-page quantity breaks, volume discounts, and A/B testing.
Pricing: Free to install for development stores. Paid plans start at $14.99/month.
Rating: 4.8 stars with 200+ reviews at the time of review.
Wide Bundles focuses on product-page bundle offers, especially quantity breaks and volume discounts. It also supports mix-and-match bundles and BOGO offers, with more than 100 customization options and built-in A/B testing.
That makes it appealing to merchants who care about how the offer looks on the product page and want to test different layouts, discount levels, or messaging.
Key features
- Quantity breaks
- Volume discounts
- Mix-and-match bundles
- BOGO offers
- 100+ design customization options
- A/B testing
- Flat discounts, percentage discounts, gifts, and fixed price offers
- Integrations with upsell tools, cart drawers, page builders, and COD apps
Pros
- Strong visual customization
- Built-in A/B testing
- Good for merchants who want product-page quantity breaks
- Built for Shopify status
- Useful for design-focused stores
Cons
- Revenue-based pricing can matter as bundle sales grow
- Less focused on inventory-heavy operations than Simple Bundles
- Review base is smaller than some established competitors
Verdict
Wide Bundles is a good fit for merchants who want to control product-page bundle design and run A/B tests. It is especially relevant for quantity break campaigns, where layout and offer presentation can strongly affect conversion rates.
8. Zoorix: Bundles & Cross Sell
Best for: Stores that want bundles, quantity breaks, and cross-sell recommendations across product pages and the cart drawer.
Pricing: Free plan available. Paid plans start at $7.99/month.
Rating: 4.9 stars with 300+ reviews at the time of review.
Zoorix combines bundle offers with cross-sell and upsell features. It supports volume discounts, quantity breaks, tiered pricing, bundles, mix-and-match, build-a-box, BOGO, free shipping thresholds, and AI cross-sell offers.
The cart drawer angle is useful because shoppers in the cart are already close to making a purchase. Showing a relevant add-on or bundle at that moment can feel more natural than forcing every upsell onto the product page.
Key features
- Volume discounts and quantity breaks
- Mix-and-match bundles
- Build-a-box
- BOGO and bulk discounts
- AI cross-sell on product pages and cart drawer
- Free shipping thresholds
- Multi-currency and multi-language support
- Conversion and funnel analytics
Pros
- Free plan available
- Low starting paid price
- Combines bundles with cart cross-sell
- Useful for stores that want a product page and cart placement
- Good balance of features and affordability
Cons
- Revenue-generated pricing tiers can require monitoring
- Not as specialized for deep inventory workflows
- Merchants who only need simple bundle widgets may not use all features
Verdict
Zoorix is a strong value option for merchants who want bundles and cross-sells together. It works well when you want to increase AOV through both product-page offers and cart-stage recommendations.
9. Amplify | Bundles & Upsell
Best for: Brands that want visual bundle builders, shop-the-look style offers, one-click upsells, and a higher-budget bundle platform.
Pricing: Starts at $99.50/month with a free trial.
Rating: 4.5 stars with 500+ reviews at the time of review.
Amplify, formerly known as PickyStory, is designed for merchants who want more visual merchandising for bundles. It supports bundle-as-product, bundle builder scenarios, quantity breaks, volume discounts, upsells, cross-sells, BOGO, kits, mix-and-match, and frequently bought together.
This can make sense for fashion, lifestyle, home goods, and premium brands that place heavy emphasis on presentation.
Key features
- Bundle as a product
- Bundle builder scenarios
- Quantity breaks and volume discounts
- One-click bundle upsells
- BOGO, kits, and mix-and-match
- Frequently bought together
- CSS customization
- Deep analytics
- Live chat support
Pros
- Strong visual merchandising potential
- Good for premium and lifestyle brands
- Supports many bundle and upsell formats
- Useful analytics and customization features
Cons
- Much higher starting price than most apps in this list
- Some merchants may not need the full platform
- Rating is lower than several lower-cost competitors
Verdict
Amplify is best for merchants with the budget and need for a more visual bundle experience. It may be too expensive for early-stage stores, but it can fit brands where presentation and guided bundle building are central to the shopping experience.
10. Shopify Bundles (Official Shopify App)
Best for: Merchants who want Shopify's official free app for simple fixed bundles and multipacks inside Shopify.
Pricing: Free.
Shopify Bundles is Shopify's own official first-party bundle app. It allows merchants to create fixed bundles and multipacks directly from the Shopify admin, without installing a third-party paid app. For stores testing bundling for the first time, this can be a sensible starting point.
The biggest advantage is simplicity. You do not need to manage a complex external dashboard, and the app is built by Shopify. It is a good fit when you want to sell a pre-defined group of products, such as a "Starter Kit," "3-Pack," or "Complete Set."
Key features
- Fixed bundles
- Multipacks
- Native Shopify admin setup
- No coding required
- Variant selection for products inside the bundle
- Real-time inventory updates for bundle components
Pros
- Free and built by Shopify
- Simple setup for fixed bundles and multipacks
- Good first step for merchants testing bundle demand
- Inventory updates are handled natively
Cons
- Limited to simpler bundle use cases
- Not designed for advanced quantity breaks, BOGO, gifts, or upsells
- Limited storefront merchandising compared with dedicated bundle apps
- Not ideal for merchants who need strong AOV optimization features
Verdict
Shopify Bundles is the best option if you only need simple fixed bundles and want to avoid extra app costs. But if you want quantity breaks, BOGO, free gifts, mix-and-match, product add-ons, sticky add-to-cart, or richer bundle design control, you will quickly outgrow the native setup.
Best Shopify Bundle App by Use Case
| Use case | Best apps to consider |
|---|---|
| Best overall for AOV-focused offers | V Bundles, Kaching, Fast Bundle |
| Best free native option | Shopify Bundles |
| Best for quantity breaks | V Bundles, Kaching, Wide Bundles |
| Best for volume discounts | V Bundles, Bundler, Zoorix, Wide Bundles |
| Best for BOGO and free gifts | V Bundles, BOGOS, Fast Bundle |
| Best for mix-and-match bundles | Fast Bundle, Simple Bundles, Bundler, BOGOS, V Bundles |
| Best for fulfillment and inventory sync | Simple Bundles, Shopify Bundles |
| Best for cart cross-sell | Zoorix, V Bundles, Fast Bundle |
| Best for FBT recommendations | Fast Bundle, V Bundles, Kaching |
| Best budget option | Bundler, Zoorix, V Bundles |
| Best for visual bundle builders | Amplify, Fast Bundle, Wide Bundles |
How to Choose the Right Shopify Bundle App
The best Shopify bundle app depends less on the number of features and more on the job the app needs to do.
1. Start with your primary offer type
Before installing anything, decide which bundle strategy you want to launch first.
If you sell consumables, refills, apparel basics, pet products, supplements, cosmetics, candles, or office supplies, start with quantity breaks. The buying behavior is already quantity-friendly, so a "Buy more, save more" offer can quickly boost AOV.
If you sell complementary products, start with frequently bought together or fixed bundles. If you sell giftable products or products with many variants, mix-and-match can work better. If your goal is urgency or inventory movement, BOGO and free gifts are often stronger.
2. Match app complexity to your store stage
A new store does not need the same bundle setup as a Shopify Plus brand.
- Launch stage: Start simple. Use Shopify Bundles, Bundler, V Bundles, or Zoorix.
- Growth stage: Add more AOV features. Compare V Bundles, Kaching, Fast Bundle, BOGOS, and Wide Bundles.
- Scale stage: Prioritize operations. Consider Simple Bundles if fulfillment, 3PL, WMS, or POS workflows matter.
Installing the most complex app too early can slow you down. Installing a simple app too late can create operational problems.
3. Check pricing against your growth model
Bundle apps often use different pricing models:
- Flat monthly pricing
- Revenue-based pricing
- Order-based pricing
- Shopify-plan-based pricing
- Free plan with feature limits
- Free for development stores
A plan that looks cheap today can become expensive if your bundle revenue grows quickly. On the other hand, a higher monthly fee can be worth it if the app replaces multiple tools and increases AOV meaningfully.
4. Test mobile experience before launching
A bundle widget can look great on desktop and still fail on mobile. Before publishing a campaign, test:
- Product page loading speed
- Widget spacing and readability
- Add-to-cart behavior
- Variant selection
- Discount application
- Cart drawer behavior
- Checkout flow
Mobile shoppers need clear savings, easy selection, and a fast path to checkout.
5. Track more than revenue
Revenue matters, but it is not the only metric. Track:
- Average order value
- Units per transaction
- Conversion rate
- Revenue per visitor
- Bundle attach rate
- Discount cost
- Gross margin
- Repeat purchase rate
A bundle that increases AOV but destroys margin is not a good bundle. A bundle that slightly increases AOV while improving customer experience, inventory turnover, and repeat purchases can be much more valuable.
Common Mistakes to Avoid When Using Bundle Apps
Mistake 1: Choosing an app before choosing a strategy
Do not start by asking, "Which app has the most features?" Start by asking, "Which offer do I want to launch first?" A store that only needs quantity breaks should not install a complex enterprise bundle builder. A store with 3PL fulfillment should not choose a widget-only app without checking SKU handling.
Mistake 2: Over-discounting too early
Bundles are not just discounts. They are value packages. Start with a margin-safe discount, then test whether customers respond. For many products, 10–20% is enough to create perceived value without damaging profitability.
Mistake 3: Hiding the savings
Customers should instantly understand why the bundle is worth buying. Show the original price, bundle price, savings amount, and the practical benefit. "Save $18" is usually clearer than "15% off."
Mistake 4: Creating too many choices
Mix-and-match bundles can convert well, but too many product options can create decision fatigue. Start with a curated selection, then expand once you know what customers choose.
Mistake 5: Ignoring fulfillment
If your bundle creates fulfillment confusion, customer support problems will follow. Always test a real order before launching. Check how the bundle appears in admin, packing slips, inventory, 3PL tools, and email notifications.
Final Thoughts
There is no single best Shopify bundle app for every merchant, but there is a best fit for your current store stage and offer strategy. If you want a simple free starting point, Shopify Bundles is useful for fixed bundles and multipacks. If your goal is practical AOV growth through quantity breaks, BOGO, free gifts, subscriptions, product add-ons, and sticky offers, V Bundles offers a flexible no-code setup without forcing you to use multiple apps. If your store has complex inventory, 3PL, POS, or B2B workflows, Simple Bundles deserves a closer look. For promotion-heavy brands, BOGOS is strong, while Fast Bundle and Kaching are established choices with broad feature sets. The best next step is to choose one offer type, launch it on a small product set, track AOV and margin for two weeks, and then expand what works.
