Cross • Build Your Own Bundles vs Start21 Mix & Match Bundles
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Cross • Build Your Own Bundles, Nov 6, 2026 for Start21 Mix & Match Bundles.
The short answer
- Only Start21 Mix & Match Bundles lists a free plan. Paid plans start at $49/month for Cross • Build Your Own Bundles and $9.99/month for Start21 Mix & Match Bundles.
- Cross • Build Your Own Bundles lists 11 features Start21 Mix & Match Bundles’s listing doesn’t mention, including BOGO, Build a box, Bulk pricing.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Performance
Free
- · 1 bundle on sale
- · New variants synced automatically
- · Per-item size and colour pickers
Starter
- · New variants synced automatically
- · Per-item size and colour pickers
- · Up to 10 bundles on sale
Unlimited
- · New variants synced automatically
- · Per-item size and colour pickers
- · Unlimited bundles
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCrossBundle lets merchants create fully customizable product bundles. Shoppers can select items themselves from pre-configured buy, get, and optional slots. Set minimum and maximum selections, quantity limits, and flexible bundle rules. Real-time performance tracking and inventory sync ensure accurate stock management. Compatible with all themes using native app blocks for seamless integration.
Create offers like any 2 tees for $45 that work for clothing, shoes and other products with sizes and colours. On your product page, shoppers pick a product, size and colour for each item in the bundle. Checkout and orders list every item with its size and colour, so you know exactly what to pack, and inventory is taken from the variants the shopper chose.
- Customizable bundle builder: Configure bundles with buy, get, and optional items
- Flexible bundle discounts and rules: fixed, percentage and optional discounts
- Real-time performance tracking: Monitor bundle performance and sales
- 2.0+ Theme compatibility: Works with all themes using native app blocks
- Per-item size and colour pickers across up to 20 products per bundle
- Orders and inventory use the exact variants each shopper picked
- New sizes and colours are added to your bundles automatically
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Cross • Build Your Own Bundles | |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Cross • Build Your Own Bundles | |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 4 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Cross • Build Your Own Bundles | |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $49/month | $9.99/month(ahead) |
| Longest free trial | Not listed | 7 days |
| Plans listed | 1 | 3 |
Listing
| Measure | Cross • Build Your Own Bundles | |
|---|---|---|
| Shopify category rank | #173 | Not enough data |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Dec 19, 2025 | Nov 6, 2026 |
| Languages | 1 | 1 |
| Developer | CrossApps | Oak Glen |
FAQ
Cross • Build Your Own Bundles and Start21 Mix & Match Bundles: common questions
- Is Cross • Build Your Own Bundles or Start21 Mix & Match Bundles cheaper?
- Only Start21 Mix & Match Bundles lists a free plan. Paid plans start at $49/month for Cross • Build Your Own Bundles and $9.99/month for Start21 Mix & Match Bundles. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Cross • Build Your Own Bundles lists 11 the others don’t mention, such as BOGO, Build a box, Bulk pricing, Cart discounts. Start21 Mix & Match Bundles lists 1 the others don’t mention, such as Multipacks. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for Cross • Build Your Own Bundles, Nov 6, 2026 for Start21 Mix & Match Bundles; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for Cross • Build Your Own Bundles, Nov 6, 2026 for Start21 Mix & Match Bundles. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.