Custom Shopify App vs App Store App: When to Build Your Own
Short answer: Use an App Store app when one existing app does what you need, is well reviewed and reasonably priced. Build a custom Shopify app when you’re stacking several apps to do one job, need your store to sync with another system like an ERP or CRM, or need logic no app offers. Custom apps cost more upfront but can save monthly fees, reduce page weight and fit your workflow exactly.
How the two options compare
| App Store app | Custom app | |
|---|---|---|
| Upfront cost | Low or none | Higher |
| Ongoing cost | Monthly subscription, often in USD | Hosting and maintenance |
| Setup time | Minutes to days | Weeks |
| Fit to your workflow | Generic, built for many stores | Exact |
| Control | Developer decides features and pricing | You decide |
| Speed impact | Varies, some add heavy scripts | Built only for what you need |
When an App Store app is the right choice
- Your need is common: reviews, wishlists, email pop-ups, basic upsells.
- One app covers it well, with good reviews and active support.
- The monthly price is small compared with what it earns or saves.
- You don’t need it to talk to other business systems.
When to build a custom app
1. You’re paying for several apps to do one job
Three apps for bundles, discounts and B2B pricing that don’t work together cleanly. One custom app can replace them.
2. You need integration with your other systems
Syncing orders, stock or customers with an ERP, accounting software, warehouse, courier or CRM. Apps for this are often generic or don’t support Indian tools you use.
3. You need unique logic
Product configurators, custom pricing per customer group, special discount rules or workflows for your team. Shopify Functions allow custom discount, shipping and payment logic to run inside Shopify.
4. Apps are slowing your store down
Every app can add scripts to your storefront. A focused custom solution, or theme app extension, loads only what’s needed.
5. You want to sell an app
If you’ve solved a problem other merchants have, a public app on the Shopify App Store can become a product of its own.
What a custom Shopify app costs
Cost depends on features and integrations. As a guide, a focused custom app for one store often starts around ₹40,000, integrations with external systems cost more, and public App Store apps with billing and onboarding are larger projects. Add ongoing maintenance, because Shopify releases new API versions regularly.
How custom apps are built
- Scope: what the app must do, which data it touches, which Shopify APIs it needs.
- Prototype: admin screens designed with Shopify’s Polaris design system.
- Build: backend, webhooks, extensions, tested on a development store.
- Install: on your store, or submitted to the App Store for public apps.
- Maintain: API updates, monitoring and changes.
Paying for apps that don't quite fit?
Tell us what you need. We'll tell you honestly if an existing app can do it, or what a custom app would take.
FAQ
Do I need Shopify Plus for a custom app?+
No. Custom apps, admin tools, integrations and most Shopify Functions work on all plans. Some checkout customisations require Plus.
Who owns a custom Shopify app?+
If it's built in your Partner account and repository, you do. Make this clear in your agreement.
How long does a custom Shopify app take?+
A focused app often takes 4–6 weeks; public apps with billing and App Store review usually take longer.
Will a custom app slow down my store?+
A well-built one shouldn't. It can actually speed things up by replacing several heavier apps.
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