Bundlex Product Bundles Upsell vs STAKK ‑ Volume Bundles & More
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 4, 2026 for Bundlex Product Bundles Upsell, Jul 18, 2026 for STAKK.
The short answer
- On the Shopify App Store: Bundlex Product Bundles Upsell 5.0 from 235 reviews and STAKK 5.0 from 1 reviews.
- Both list a free plan. Paid plans start at $14.99/month for Bundlex Product Bundles Upsell and $19/month for STAKK.
- STAKK lists 8 features Bundlex Product Bundles Upsell’s listing doesn’t mention, including Automatic discounts, Bulk discounts, Buy more, save more.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · Email support
- · Every feature
- · Unlimited bundles
- · Up to $100 of added revenue
Starter
- · Chat support
- · Every feature
- · Unlimited bundles
- · Up to $1,000 of added revenue
Growth
- · Chat support
- · Every feature
- · Unlimited bundles
- · Up to $5,000 of added revenue
Pro
- · Chat support
- · Every feature
- · Unlimited bundles
- · Up to $10,000 of added revenue
Free
- · 1 active bundle
- · Basic analytics
- · Theme app block widget
- · Volume discounts only
Growth
- · All 3 bundle types
- · Custom branding
- · Standard analytics
- · Unlimited bundles
Pro
- · Advanced analytics
- · Built-in A/B testing
- · Everything in Growth
- · Post-purchase upsell
- · Priority support
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureSell more and boost AOV on every product page! Bundlex puts bundles, BOGO deals, quantity breaks, and cross-sell offers inside one fully visual widget - showing each item with its own image, variant picker and price. Add urgency with a countdown timer and sticky add-to-cart bar, keep stock pressure live with low stock alerts, and translate the entire widget into any language with one-click AI translation.
STAKK Bundles helps merchants sell more per visit by combining proven bundle types with built-in A/B testing. Run volume discounts, mix-and-match bundles, and fixed routines on any product page, then test variants head-to-head and let STAKK declare the winner.
- Build product bundles, BOGO, and volume discounts in minutes
- Create offers like “Buy X, Get Y” and “Buy More, Save More”
- Fully customizable widget that works with any Shopify theme
- Works with discount codes and automatic discounts
- Three bundle types: volume discounts, mix-and-match, and fixed routines
- Built-in A/B testing with automatic winner declaration
- Discounts apply natively at checkout via Shopify Functions
- Theme app block widget — one-click install, clean uninstall
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 |  Bundlex Product Bundles Upsell |  STAKK |
|---|---|---|
| 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 | Bundlex Product Bundles Upsell | STAKK |
|---|---|---|
| App Store rating | 5.0 ★ | 5.0 ★ |
| App Store reviews | 235(ahead) | 1 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | 1% | Not enough data |
Pricing
| Measure | Bundlex Product Bundles Upsell | STAKK |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $14.99/month(ahead) | $19/month |
| Longest free trial | 7 days | 7 days |
| Plans listed | 4 | 3 |
Listing
| Measure | Bundlex Product Bundles Upsell | STAKK |
|---|---|---|
| Shopify category rank | #4 | Not enough data |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | Yes | No |
| Launched | Oct 21, 2024 | May 11, 2026 |
| Languages | 1 | 1 |
| Developer | Bundlex | STAKK Software |
FAQ
Bundlex Product Bundles Upsell and STAKK: common questions
- Is Bundlex Product Bundles Upsell or STAKK cheaper?
- Both list a free plan. Paid plans start at $14.99/month for Bundlex Product Bundles Upsell and $19/month for STAKK. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, Bundlex Product Bundles Upsell or STAKK?
- On the Shopify App Store: Bundlex Product Bundles Upsell 5.0 from 235 reviews and STAKK 5.0 from 1 reviews.
- What features does each app list that the other doesn’t?
- Bundlex Product Bundles Upsell lists 7 the others don’t mention, such as Cart discounts, Flat discounts, Gift boxes, Percentage discounts. STAKK lists 8 the others don’t mention, such as Automatic discounts, Bulk discounts, Buy more, save more, Custom styles. 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 Nov 4, 2026 for Bundlex Product Bundles Upsell, Jul 18, 2026 for STAKK; 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 Nov 4, 2026 for Bundlex Product Bundles Upsell, Jul 18, 2026 for STAKK. 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.