We build public Shopify apps for merchants who've outgrown off-the-shelf solutions. Custom-built, App Store-ready, engineered to scale.
The Shopify App Store has 12,000+ apps. Most stores still hit a wall where the plugins stop and the problems begin. We build the apps that don't exist yet — specifically for your merchant segment, your workflow, your growth model.
Apps listed on the Shopify App Store — built from scratch, reviewed and approved by Shopify, ready for any merchant to install.
Custom apps for single-store operations — POS integrations, ERP bridges, inventory middleware, bespoke checkout flows.
Taking on existing apps that need rewriting, scaling, or modernizing — GraphQL migration, Polaris UI, performance overhaul.
We handle the full Shopify app review process — submission, compliance checks, reviewer communication, approval.
We map your merchant's problem, your target market, and the competitive landscape to define what the app needs to do and who it serves.
React front-end, Node.js back-end, Shopify GraphQL APIs. We build to Shopify's standards — Polaris UI, App Bridge, OAuth, webhooks, billing API.
We manage the Shopify app review process end-to-end, handle any compliance gaps, and get the app listed and live on the Store.
Post-launch we track adoption, merchant feedback, and Shopify API changes — keeping the app alive and competitive.
Every month, thousands of Shopify merchants hit a wall that no existing app can solve. That's the moment AppStack was built for.
Free 14-day trial · No credit card required · 5-minute setup