The Shopify app store makes it easy to bolt on a review widget, an upsell pop-up, a page builder and a dozen other tools, each one a small monthly fee. Individually they look cheap. Added up, and multiplied by twelve, the annual bill is often a genuine shock. This free calculator lets you tick every app you actually pay for, edit the price to match your plan, and see the real yearly cost in a single figure.
It also does something the app store will not: it flags the apps whose job a custom Shopify theme build can usually do natively (reviews, upsells, page building, search and filtering, pop-ups and wishlists) so you can see how much of your monthly rent could become a one-off piece of development you own. It is built for Shopify store owners, founders and marketers weighing up whether an ever-growing app bill is worth it, or whether a custom build would pay for itself. Nothing is stored, there is no sign-up, and every price is editable.
Tick every app you pay for. Edit any price to match your plan.
Email & SMS
Reviews
Subscriptions
Upsells & Bundles
Loyalty
Page Builder
Search & Filter
Translation & Currency
Shipping Rates
Back-in-Stock
Wishlists
Pop-ups
Bulk Editing
SEO
Add another app
What a custom build could replace
Select your apps to see how much of the bill a custom build could fold in.
Email, SMS, subscriptions and loyalty are not sensibly replaced by a one-off build, so they are left out of that figure.
Every app is prefilled with a realistic mid-tier plan price in pounds per month. Those are starting points, not quotes: your real bill depends on the plan tier and usage band you are on, so edit any price to match what you actually pay. The yearly figure is simply your monthly total multiplied by twelve.
The replaceable figure counts only the apps whose core job a custom theme build can usually deliver natively: reviews, upsells and bundles, a page builder, search and filtering, pop-ups and wishlists. Email, SMS, subscriptions and loyalty are deliberately excluded because they run on billing and messaging engines that a one-off build does not sensibly replace. Any custom app you add is always treated as not replaceable.
Pricing and benchmarks last verified 2026-07-04. Always confirm current figures with the providers before making decisions.
Every app starts on a realistic mid-tier plan price, but app pricing changes often and usually scales with usage, so treat the prefilled numbers as a starting point. Edit any price inline to match your actual invoice and the monthly and yearly totals update instantly.
It flags the apps whose core job a custom Shopify theme, or a headless build, can deliver natively: reviews display, upsells and bundles, page building, search and filtering, pop-ups and wishlists. Instead of renting those features every month, they become part of a one-off build you own.
Those tools run on sending infrastructure, billing engines and points systems that genuinely earn their keep as ongoing services. Replacing them with a one-off build would be neither honest nor sensible, so we leave them out of the replaceable figure to keep the number credible.
Not on its own. A custom build makes sense when the annual app bill, plus the performance and flexibility limits of a heavily stacked theme, outweigh the one-off cost. This tool sizes the first part of that decision and a quote covers the rest.
No. Everything runs in your browser, nothing is sent to a server and there is no sign-up. The Copy and Share buttons only build a sentence you can paste yourself.
Built by JW Digital, a Manchester ecommerce agency. We build custom Shopify themes and headless stores that fold reviews, upsells, page building, search and pop-ups into the build itself, so you stop renting them monthly. Get a custom build quote.