The flat-fee Shopify upsell app that doesn't punish you for growing. Lock in unlimited post-purchase upsells for $6/month for life — only … spots remain.
111 of 111 founding spots left · $6/mo for life · No credit card required
$12/month flat. Sell $1M or $10M, same price. The way SaaS should be.
Built on Shopify Checkout Extensions. Zero external scripts. Zero PageSpeed impact.
Upsells merge into the original order. No double shipping. No warehouse chaos.
The old giants built their apps before Shopify had native checkout extensions. It's time for something better.
| Feature | Others | Mediumax |
|---|---|---|
💰 Pricing $12/mo forever | $35–$399/mo + up to 1% of every sale | $12/month flat — at any revenue |
⚡ Speed Zero impact | Legacy scripts slow mobile checkout | Native Checkout Extensibility, 0ms added |
📦 Fulfillment Save $10+/upsell | Separate orders, double shipping | Merged into original order |
🛡️ Trust +30% CVR | Third-party pop-ups break trust | Native UI, 15-30% higher acceptance |
The Math: At $100K/month with a 1% commission app, you're paying $1,000/month. With Mediumax, you pay $12.
That's $988 back in your pocket. Every single month.
100% native to Shopify's Checkout Extensibility platform. No legacy scripts. No theme bloat.
Runs entirely within Shopify's native checkout UI. No external scripts, no theme modifications, no impact on your PageSpeed score.
Uses Shopify's Order Editing API to merge upsells directly into the original order. One shipment, one tracking number, happy customers.
Customers see upsells as part of Shopify's official checkout flow. Trust drives conversions — 15-30% higher acceptance rates.
The same checkout extensibility used by Shopify Plus brands. No revenue tiers, no enterprise plan. Just great tech at $12/month.
At $50K, $500K, or $5M in upsells — you pay $12. Forever.
Be one of the … remaining stores to reclaim your margins.
Lock in $6/month for life instead of $12/month. 50% off. Forever.
111 of 111 founding spots left · $6/mo for life · No credit card required