# App Error Fix Catalog 2026: 148 Documented Fixes by Platform > 148 documented app error fixes by platform: Supabase 36, Firebase and Firestore 23. Counted November 4, 2026 from our own catalog, not error frequency. Canonical: https://app369.com/statistics/app-error-fix-data-2026/ Last updated: 2026-11-04 148 documented error fixes across 11 groups of platforms and tools, counted from App369's /fix/ pages on November 4, 2026. Supabase has the most pages, 36 of 148. This counts the errors we have written up. It does not say how often each error happens. Every figure below was counted by App369 from the source linked in its row, on November 4, 2026. ## **The Catalog** Each page covers one exact error message or problem, with the causes and fixes checked against the vendor's own documentation. We counted the published pages on November 4, 2026. | Metric | Value | Source | | --- | --- | --- | | **Documented error fixes in the catalog **[Link to this finding](#fix-total) | 148 pages, one per exact error message or problem | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Platforms and tools covered **[Link to this finding](#fix-platforms) | 11 groups, listed below | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | ## **Fix Pages by Platform** Each page is counted once, under the first platform that matches its address. These are pages we have written, so a larger count means we have documented more of that platform's errors, not that its users hit more of them. | Metric | Value | Source | | --- | --- | --- | | **Supabase fix pages **[Link to this finding](#fix-platform-supabase) | 36 of 148 (24%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Firebase and Firestore fix pages **[Link to this finding](#fix-platform-firebase) | 23 of 148 (16%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Vercel and Next.js fix pages **[Link to this finding](#fix-platform-vercel-nextjs) | 17 of 148 (11%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Expo, Flutter, React Native and Android fix pages **[Link to this finding](#fix-platform-mobile) | 14 of 148 (9%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Stripe fix pages **[Link to this finding](#fix-platform-stripe) | 14 of 148 (9%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Lovable, Bolt and Replit fix pages **[Link to this finding](#fix-platform-ai-builders) | 12 of 148 (8%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **App Store and TestFlight fix pages **[Link to this finding](#fix-platform-app-store) | 11 of 148 (7%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **AI APIs and MCP connectors fix pages **[Link to this finding](#fix-platform-ai-apis) | 8 of 148 (5%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Google Play fix pages **[Link to this finding](#fix-platform-google-play) | 6 of 148 (4%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Other hosting and tooling fix pages **[Link to this finding](#fix-platform-other) | 4 of 148 (3%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Google sign-in and Maps fix pages **[Link to this finding](#fix-platform-google-apis) | 3 of 148 (2%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | ## **How the Pages Are Checked** Shares use all pages in the catalog as the denominator. | Metric | Value | Source | | --- | --- | --- | | **Pages that link at least one vendor source **[Link to this finding](#fix-with-sources) | 148 of 148 (100%), 406 source links in all | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Pages that quote the vendor’s own wording for at least one cause **[Link to this finding](#fix-with-quote) | 138 of 148 (93%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Pages that link a fixed-price App369 offer **[Link to this finding](#fix-with-offer) | 141 of 148 (95%) | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | | **Dates the causes were last checked against the sources **[Link to this finding](#fix-checked-range) | October 30, 2026 to November 4, 2026 | [App369 /fix/ catalog, counted from the published fix pages](https://app369.com/fix/) | ## **Cite this page ** To cite one number, link to its row with the “Link to this finding” link above. To cite the page, use: > App369. “App Error Fix Catalog 2026: 148 Documented Fixes by Platform.” https://app369.com/statistics/app-error-fix-data-2026/. Figures counted: November 4, 2026. ## **Fixed prices for the errors in this catalog** Fixed scope, fixed price, paid upfront. The work happens in writing; no call needed. - [**App Fix Ticket**from $450One reproducible bug in an existing mobile or web app, diagnosed and fixed.](https://app369.com/fixed-price/flutter-firebase-bug-fix/) - [**AI-Built App Rescue**from $450A Lovable, Bolt or Cursor app checked end to end in 3 days, then its worst problems fixed at a fixed price.](https://app369.com/fixed-price/ai-app-rescue/) - [**Stripe Billing Fix and Setup**$950Subscriptions, webhooks, customer portal and failed payments set up or fixed, tested in Stripe test mode.](https://app369.com/fixed-price/stripe-billing-setup/) ## **Frequently Asked Questions ** ### **How many app error fixes does App369 document?** 148 fix pages on November 4, 2026, across 11 groups of platforms and tools. Supabase has 36, Firebase and Firestore has 23, Vercel and Next.js has 17. [Link to this answer](#faq-how-many-app-error-fixes-does-app369-document) ### **Does this show which errors are most common?** No. It counts the pages in App369’s own catalog. A platform with more pages is one we have documented more, and we have not measured how often any error happens. [Link to this answer](#faq-does-this-show-which-errors-are-most-common) ### **Where do the fixes come from?** 148 of the 148 pages link the vendor's own documentation and 138 quote its wording for at least one cause. Each page shows the date its causes were checked. [Link to this answer](#faq-where-do-the-fixes-come-from) ## **Planning an App? ** Get a ballpark from our [app cost calculator](https://app369.com/tools/app-cost-calculator/), see what sellers publish for fixed-price work in the [fixed-price price study](https://app369.com/statistics/fixed-price-app-development-prices-2026/), compare frameworks in the [Flutter vs React Native guide](https://app369.com/compare/flutter-vs-react-native/), or send us a brief. We reply by email, usually within one business day. [](https://app369.com/contact/) [](https://app369.com/statistics/)