STAKK ‑ Volume Bundles & More

STAKK, officially listed on the Shopify App Store as STAKK ‑ Volume Bundles & More, is a Shopify app in the Product bundles category. 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. Discounts apply natively at checkout via Shopify Functions, the storefront widget installs as a theme app block, and post-purchase upsells extend the order on the thank-you page. It averages 5.00 out of 5 across 1 merchant reviews on the Shopify App Store.

STAKK offers a free plan and 2 paid plans starting at $19/month and going up to $49/month. The free plan includes 1 active bundle, Volume discounts only, Theme app block widget, and Basic analytics. The paid plans unlock advanced features beyond what's available on the free tier.

Yes — STAKK offers a free plan alongside paid options. The free plan includes 1 active bundle, Volume discounts only, and Theme app block widget. Paid plans start at $19/month for advanced features.

STAKK launched on May 11, 2026. In that time it has gathered 1 merchant reviews.

STAKK does not currently carry Shopify's Built for Shopify badge. The badge is awarded to apps that meet Shopify's published standards for performance, ease of use, and merchant value — many high-quality apps operate without it.

Merchants commonly compare STAKK with Kaching Bundles App & Upsells, BOGOS, Pumper Bundles Quantity Breaks, and FBP. Each alternative covers a similar use case but differs on pricing model, integration depth, and the specific themes merchants praise in reviews — see the alternatives section above for a side-by-side.