Dev Tools
React Native and Expo techniques, build-error and crash troubleshooting, and API integrations that help you take Rork-generated code to production quality.
Fixing Layout Bleed on Android 15 (API 35) in Rork Apps
Once you bump targetSdkVersion to 35, Android 15 enforces edge-to-edge display, and Rork-generated tab bars and headers start sliding under the system bars. Here are the patterns I use with react-native-edge-to-edge and useSafeAreaInsets to fix it properly.
One Month of Reading Xcode Organizer Hang Reports Only on Friday Afternoons
I switched to reading Xcode Organizer Hang Reports for only thirty minutes every Friday for a month. Here is how it compared with Crashlytics and what actually improved across my wallpaper apps.
Implementation Notes: Adding StoreKit 2 In-App Purchases to a Rork iOS App
Notes from grafting StoreKit 2 in-app purchases onto Swift/SwiftUI code generated by Rork, drawing on the StoreKit 1-to-2 migration done across a 50M-cumulative-download wallpaper-app portfolio. Covers ProductID design, transaction verification, paywall UI, and production gotchas.
iOS Memory Pressure on Rork Apps — A 5-Tier Release Architecture from 12 Years of Wallpaper Apps
A 5-tier memory release architecture for Rork-built iOS apps, refined while running wallpaper apps to a cumulative 50 million downloads. Includes the Instruments + MetricKit measurement flow that brought OOM rate from 4.3% to 0.36%.
Why your Rork app shows a blank screen or loses state after returning from background
Your Rork app sits in the background overnight, you tap the icon the next morning, and the screen is blank — or your drafts have disappeared, or you have been silently logged out. iOS process reclamation, AsyncStorage rehydration timing, and Navigation state restoration each cause a different version of this bug. Notes from running wallpaper and wellness apps with 50M downloads as an indie developer.
Rolling Out Privacy Manifest to Six Wallpaper Apps in Parallel — Translating One Rejection into Five Clean Submissions
Operational notes from rolling out Privacy Manifest to six iOS wallpaper apps in parallel. How a single rejection on the first submission shaped the remaining five, and how phased release rings were designed for a UI-less update.
Enforcing AI Cost Ceilings at Runtime — A Budget-Guard Architecture for Rork Apps
How to stop runaway AI bills not by optimizing, but by physically enforcing budget at runtime. An indie developer's three-layer architecture using Cloudflare Durable Objects, with hard-won lessons from running 50M-download apps.
Staged migration of a Rork-generated RN project to the New Architecture — notes from running six wallpaper apps in parallel
An implementation log for incrementally enabling Fabric and TurboModules on a Rork-generated React Native project, validated in parallel across six wallpaper apps. Covers flag design, compatibility triage, and KPI comparison based on actual production data.
Clearing the Red Errors in Xcode After Rork Max Generates Swift Code: A Priority Order
A priority order I use to clear the wall of red errors that Rork Max-generated Swift projects show on first open in Xcode, drawn from ten-plus years of indie iOS work.
expo-haptics Silent on Production Builds in Rork — Simulator, Device, and Low Power Mode Pitfalls
Your Rork-generated app taps the favorite button and nothing happens on TestFlight — but Expo Go works fine. Lessons from a wallpaper indie shop on the five most common reasons expo-haptics goes silent, with working call patterns for each.
Rork-Specific 'expo start --offline forbidden': Four Causes in Rork's Template Config
When expo start --offline returns 'forbidden' specifically on a Rork-generated project, the cause is usually Rork template config: tsconfigPaths, an un-generated expo-router cache, native prebuild, or a lockfile mismatch. Four Rork-specific fixes; the generic Expo proxy and dependency-validation guide is covered separately.
Auditing Privacy Manifests for Rork-Generated Expo Apps — A One-Day Pre-Submission Workflow for Indie Developers
A pre-submission workflow for indie developers shipping Rork-generated Expo apps: enumerate every dependency, tell ITMS-91053 apart from ITMS-91061, and catch the Pods that npm names never show you — hermes included.
Three Weeks Triaging Crashlytics Velocity Alerts With Claude in Chrome
I spent three weeks letting Claude in Chrome open Firebase and triage Crashlytics Velocity Alerts for my wallpaper app. Here is what actually got easier, and what still needs human judgment.
Why FlatList's onEndReached Fires Multiple Times — and How to Stop It
After wiring up infinite scroll in a Rork-generated FlatList, you may notice the same paginated request hitting your API two or three times in a row. Here's why onEndReached fires more often than you expect and how to add a two-layer defense that survives production.
Designing an Observability Stack for Rork Max — Unifying Sentry, Crashlytics, and Cloudflare Logs from a Solo Developer's View
A practical observability stack design for apps shipped with Rork Max, covering Sentry, Crashlytics, and Cloudflare Logs role separation, scenario-based incident tracing routes, and how a solo developer can sustain it over years.
Rork iOS App Rejected with ITMS-90683 on TestFlight — How to Fix Missing Purpose Strings via app.json
If your Rork-built iOS app passes upload but gets an email titled ITMS-90683: Missing Purpose String in Info.plist, this guide walks through the real cause and the permanent fix via app.json, based on 12 years of shipping personal iOS apps with the same problem appearing across new SDK updates.
Automating Production Incident Response as a Solo Developer — Crashlytics, Sentry, Slack Routing, and Staged Rollback
Twelve years of running my own iPhone and Android apps, accumulating 50 million downloads, taught me a specific shape for production incident response. This article shares the Crashlytics + Sentry double layer, Slack routing into interrupt and log channels, and a Remote Config plus EAS Update staged rollback I keep returning to.
Production-Quality VoiceOver and Dynamic Type for Rork Apps
An indie developer's implementation notes for adding production-quality VoiceOver, Dynamic Type, and Reduce Motion support to React Native apps generated by Rork — covering label design, focus management, and regression testing.
Fixing 0x8badf00d Watchdog Kills That Wipe Out Rork Apps at Launch
Your Rork iOS app dies right after launch on real devices, but never on your bench. Crashlytics shows exception code 0x8badf00d. Here is how to read the exact watchdog budget out of the crash log and rearrange your launch path so it stops.
Rork × StoreKit 2 × App Store Server API — A Three-Layer Subscription Architecture for Indie Apps
How to combine StoreKit 2 and Apple's App Store Server API to protect subscription revenue in Rork iOS apps with three coordinated layers: client verification, server-side JWS validation, and notification reconciliation.
Rolling Out Firebase App Check in Rork Without Breaking AdMob or Crashlytics
A practical, staged rollout for Firebase App Check in Rork apps that keeps Crashlytics reporting, Realtime Database listeners, and AdMob payouts intact — written from running AdMob-funded indie apps in production.
Fixing 'Row too big to fit into CursorWindow' on Android When AsyncStorage Holds Too Much in Rork
When a React Native app generated with Rork stores large JSON or image metadata in AsyncStorage, Android can throw a Row too big to fit into CursorWindow exception. Here are the practical fixes — MMKV migration, chunked keys, payload trimming, and compression — explained from real wallpaper-app experience.
Auto-Throttling AdMob When Crash Rates Spike: A Revenue-Protecting Brake Architecture with Rork, Firebase Remote Config, and Crashlytics
When crash rates spike, do you keep showing ads and watch your store rating crater, or pull back and accept the lost revenue? After 12 years of indie operations, my answer is neither: a four-state auto-throttle architecture that ties Firebase Remote Config and Crashlytics signals into AdMob serving decisions.
Rork × Firebase Remote Config: Tuning AdMob Safely in Production — Run App Open Frequency Caps Without a Release
From the experience of pushing wallpaper-app App Open ads too hard and watching DAU drop, here is a design for treating AdMob format mix, frequency caps, and exclusions as a Firebase Remote Config contract. Expo/Rork wiring, fail-safe defaults, A/B testing, and metric joins included.
Fixing Linking.canOpenURL False Returns on iOS in Rork
Production iOS builds silently route every user to the mobile web instead of opening TikTok or X? This is almost always a missing LSApplicationQueriesSchemes entry. Here is the full fix path for Rork.
Three Weeks of Adjusting a Rork-Generated App for iPad: Design Notes
After building a small iPhone app with Rork, I opened it on my iPad Air and found more rough edges than I expected. Here are the concrete adjustments I made over three weeks.
Adapting Your Rork iOS App to iPhone Air and 17 Pro Series — Layout Patterns for 2026's New Resolutions
iPhone Air introduced a 420pt width that sits between the standard and Max models, quietly breaking layout conditionals in existing Rork apps. Based on updating four iOS apps at once, this covers device constant management, Safe Area handling, and full-screen image display fixes.
Images Vanishing After Play Store Release — Fixing drawable-nodpi in Rork Android Apps
After publishing a Rork-generated Android app to the Play Store, images disappeared on low-density devices. The culprit: Play Store's density APK splits and how they handle drawable-nodpi resources. A real-world fix from 12 years of app development.
Rork FlatList Crashes from Direct State Mutation – Defensive Copy Fix
FlatList crashes in Rork-generated code are often caused by direct array mutation. Learn the defensive copy pattern that eliminated 50+ crashes in 28 days from a 50M-download app's v2.1.0 update.
Is Rork's Generated Code Production-Ready? 3 Pitfalls I Found After 50M Downloads
After 50M cumulative app downloads, I tested Rork's generated code against real production scenarios and found 3 recurring crash patterns. Here's what to audit before shipping Rork-generated code, with concrete before/after examples.
Testing Rork Max SwiftUI Features on a Real Wallpaper App — What Worked, What Needed Fixes
I benchmarked Rork Max's SwiftUI generation against the production code of a wallpaper app I actually run. Here is what shipped as-is, what needed fixing, and what I ended up writing by hand — with working code and on-device measurements.
Why Nesting Your Android Ad Gate Logic Causes Hard-to-Debug Bugs — Fixing It with Parallel Structure
A nested ad gate bug in Beautiful HD Wallpapers v2.1.0 led me to rethink how ad-free logic should be structured in Android apps. The parallel structure pattern I use now also improves Rork-generated code.
Rork Max SwiftUI App Crash Logs Are Unreadable: The dSYM Upload Pitfall
Fix Unsymbolicated crash reports in Firebase Crashlytics for Rork Max SwiftUI apps. Learn the correct dSYM upload configuration with real examples from indie app development.
Fixing the White Screen on Theme Switch Without recreate() — When a Process Restart Is the Right Call
Fixing a white screen on Android theme switching by separating the cases AppCompatDelegate can handle from the ones that need an AppRestarter.safeRestart, plus the situations where killProcess should never be used.
Migrating Firebase CocoaPods to SPM in Rork Max Apps
Firebase stops publishing new Apple SDK versions to CocoaPods in October 2026 (Firebase 12 is the last major release). Here's a detailed migration log from moving 4 Rork Max iOS apps to Swift Package Manager — including dSYM failures, module errors, and the Dropbox conflict copy problem you'll definitely hit.
My Paywall and Review Prompt Showed at the Same Time — Fixing It with a ModalGate Pattern
How to prevent multiple modals from appearing simultaneously in Rork apps using a ModalGate pattern, with practical code examples from a real app update.
Rork Max Android App Crashes Only on Older OS Versions: Java 8 Desugaring Fix
Diagnose why your Rork Max Android app crashes only on older OS versions (Android 6–8) and fix it permanently with Java 8 core library desugaring. Includes the two cases where the fix alone was not enough.
Push Notifications Not Working on Android 13+ in Rork Apps — Adding POST_NOTIFICATIONS Permission
Push notifications silently failing on Android 13+? The culprit is usually a missing POST_NOTIFICATIONS permission. Here's how to add it to your Rork-generated app.
Building a Short Video Feed with Rork Max — Camera Recording, Supabase Upload & Vertical Scroll Patterns
A hands-on guide to implementing a TikTok/Reels-style vertical video feed with Rork Max. Covers camera recording, background upload to Supabase Storage, and infinite scroll with active-video detection.
Switching from Context API to Zustand v5 in Rork Apps: What Changed and Why It Worked
Context API caused cascading re-renders in a growing Rork app. Here's how migrating to Zustand v5 solved it — with practical patterns for auth state and async logic in React Native.