All Articles
How to Track Down 'undefined is not an object' Errors in Rork — Fast
Read Hermes' 'undefined is not an object' error correctly in Rork — five typical causes with code, plus debugging steps when stack traces look unhelpful.
A Prompt Engineering Blueprint for Building Mobile Apps with Rork
How to design instructions to Rork so it returns the implementation you actually want when building mobile apps. A practical methodology distilled from real shipping experience.
Why Your Rork App Loses Data After an iCloud Restore (and How to Fix It)
If users complain that 'everything was wiped after switching iPhones,' the cause is almost always your iCloud backup configuration. This guide walks through how AsyncStorage, Documents, and Keychain behave on restore in a Rork app — and the exact settings you need to keep user state intact.
Bluetooth Low Energy in Rork Apps — A Practical BLE Guide with react-native-ble-plx
A hands-on guide to talking to BLE peripherals — heart-rate monitors, smart locks, custom IoT boards — from a Rork-built app. Covers permissions, scanning, connection, read/write, and disconnect handling with real code.
Building an AI-Powered Photo Organizer App with Rork — A Complete Implementation Guide Using Vision, CLIP, and pgvector
A complete implementation guide for building an AI-powered photo organizer app with Rork. Extract faces, objects, and text with the Vision framework, generate semantic embeddings with CLIP, and run similarity search at scale using Supabase pgvector — designed as a production pipeline from day one.
Implementing App Tracking Transparency in Rork: How to Pass App Store Review
How to implement App Tracking Transparency (ATT) in Rork-built iOS apps so they pass App Store review on the first try, with the right Info.plist copy, prompt timing, and graceful fallback when users deny tracking.
Designing a Subscription Entitlement State Machine in Rork — Never Misidentify Who Has Access Right Now
Design a subscription entitlement state machine in Rork that never confuses refunds, family sharing, cancel, resubscribe, or grace periods. Production-ready code and pitfalls included.
Rork × MetricKit — Building a Solo Diagnostics Pipeline for Crashes, Hangs, and Battery Drain
A practical guide to building a continuous production-quality observability pipeline for Rork-built apps using only Apple's first-party MetricKit framework — no third-party SDKs needed.
Why Your Rork Android App Shows a White Square Notification Icon (and How to Fix It)
Your Rork or Expo app's notification icon shows up as a white square or blob on Android. Here's the underlying Android spec, the correct transparent icon recipe, the right app.json fields, and the cache traps that make fixes appear to do nothing.
Designing a Rork App That Doesn't Get Deleted — A Solo Developer's Playbook for the First Week
Most Rork apps die in the first three days. Starting with where deletion data actually comes from (not Firebase, on iOS), here is a first-week design for D0, D1, D3 and D7 — with the code that makes each stage measurable.
Building a Talking AI Companion App with Rork and ElevenLabs
Text-only companion apps tend to lose half their users within the first three days. Adding a real voice through ElevenLabs changes the experience entirely. Here's a hands-on guide to wiring it up in a Rork app, with caching tactics and paywall design that actually work.
Building a Real-Time Collaborative App Backend with Rork and Cloudflare Durable Objects — Full Implementation Guide
A production-grade walkthrough for adding a self-hosted real-time collaboration backend to your Rork app using Cloudflare Durable Objects. Covers WebSocket lifecycle, hibernation-aware sessions, optimistic updates from React Native, and cost-aware design patterns — without depending on Liveblocks or Yjs hosting.