RORK LABJP
SDK58 — The Expo SDK 58 beta is open. It ships the React Native 0.88 release candidate, and the beta period is stated as three to four weeks11/01 — For anyone who requested an extension, Google Play's target API deadline lands on November 1. Forty-four days outEASENV — A long-open report: secrets handed to a local build arrive as the literal variable name rather than its value, and the damage surfaces much laterNEW — The replacement the table recommended had already shut down. A record of reconciling all 74 rows of the deprecation listUISCENE — iOS 27 requires the new scene lifecycle. SDK 57 makes it something you opt into; it only becomes the default in 58CREDIT — What "AI errors don't cost credits" actually covers becomes clear once you record a day of asking for the same fix more than onceSDK58 — The Expo SDK 58 beta is open. It ships the React Native 0.88 release candidate, and the beta period is stated as three to four weeks11/01 — For anyone who requested an extension, Google Play's target API deadline lands on November 1. Forty-four days outEASENV — A long-open report: secrets handed to a local build arrive as the literal variable name rather than its value, and the damage surfaces much laterNEW — The replacement the table recommended had already shut down. A record of reconciling all 74 rows of the deprecation listUISCENE — iOS 27 requires the new scene lifecycle. SDK 57 makes it something you opt into; it only becomes the default in 58CREDIT — What "AI errors don't cost credits" actually covers becomes clear once you record a day of asking for the same fix more than once
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All (1023) Getting Started (94) Dev Tools (527) AI Models (114) Business (183) App Dev (105)
Dev Tools/2026-07-16Advanced

Regenerable Zones in Rork Max Code: Keeping the Freedom to Rebuild

Generated code carries an invisible asset: the option to throw it away and rebuild it. Every hand edit quietly expires that option. Here is how I track it with a ledger and CI checks across six live apps.

Dev Tools/2026-07-16Advanced

Test Generated Purchase Code Before You Touch Sandbox — Automating Refunds, Expiration, and Failures with SKTestSession

Rork Max generates StoreKit 2 code that proves people can buy. It does not prove refunds, expiration, or failed purchases are handled. Here is how to cover those paths with SKTestSession before you ever open Sandbox.

Dev Tools/2026-07-15Intermediate

A Yellow Warning in Dev, a Crash on Resume — Functions in Route Params

Rork generated navigation code that put a function and a Date into route params. In development it was only a warning. After the OS reclaimed the process, resuming the app crashed with params.onFavorite is not a function. Here is the cause and the fix.

Dev Tools/2026-07-15Advanced

The Comma That Fell to the Start of a Line: Rork, Quote Cards, and Japanese Line Breaking

React Native's Text component does not guarantee Japanese line-breaking rules. Here are the violation rates I measured, a WORD JOINER implementation that survives copy and VoiceOver, an onTextLayout audit harness, and how Rork Max (SwiftUI) differs.

AI Models/2026-07-15Advanced

On-Device Image Classification: TFLite on React Native or Core ML on Rork Max — How I Chose After Building Both

Adding on-device image classification means choosing between TFLite on React Native and Core ML on Rork Max. I built the same feature both ways, measured the end-to-end breakdown, and worked out what the decision actually hinges on.

Dev Tools/2026-07-15Advanced

Half the Bytes, the Same Wait: What AVIF Actually Cost My Wallpaper Apps

Switching to AVIF cut my transfer bill in half and did nothing for perceived speed. Here is the transfer-versus-decode breakdown, the Accept-negotiation trade-off, per-device fallback tiers, and the staged migration order that finally worked across six apps.

Dev Tools/2026-07-15Advanced

My Rork sleep timer faded out on time — but the sound didn't

Rork writes sleep-timer fades against the wall clock with setInterval. The numbers say 30 minutes, but the real audio fades early or cuts out abruptly. Here is how to drive the fade from the actual playback position, why a logarithmic curve sounds natural, and the honest limit of JS fades when the screen is locked.

App Dev/2026-07-14Intermediate

Long-Press Context Menus for a Gallery Item in a Rork Expo App

Long-pressing a wallpaper card does nothing, yet iOS users expect a preview and a menu. From why Pressable alone falls short, to a native context menu with zeego, resolving the scroll-vs-long-press conflict, wiring up save and share, and a custom overlay fallback for Android — all with working code.

Dev Tools/2026-07-14Advanced

Designing Seams That Survive AI Regeneration in Rork

Every follow-up prompt to Rork can quietly wipe out logic you wrote by hand. Protecting it with prompts is a patch, not a fix. Here is how to separate generated code from code you own, and draw a boundary that regeneration cannot reach, with working Zustand and service-layer examples.

Dev Tools/2026-07-14Advanced

Adding a Single Zod Validation Boundary to Rork's Generated Fetch Code

The network code Rork generates implicitly trusts the shape of the response. When the API shifts, the screen quietly goes blank. Here is how to slip a single Zod parse layer between the generated UI and the network to make failures predictable, with numbers from real operation.

Dev Tools/2026-07-13Advanced

postMessage Is Fire-and-Forget — Designing a Correlated Request/Response Bridge Between a WebView and React Native

postMessage between a WebView and React Native is one-way, so you never learn whether the work you asked for actually succeeded. Here is a typed request/response bridge, with correlation IDs and timeouts, built in working TypeScript.

Dev Tools/2026-07-13Advanced

When "{n} items" Breaks Across Languages — Designing Quantity Strings with CLDR Plural Categories and Intl.PluralRules

The assumption that one is singular and everything else is plural falls apart in Russian and Arabic. Here is how to hold the CLDR plural categories as a map and render quantities correctly with Intl.PluralRules and i18next, drawn from localizing an indie wallpaper app into sixteen languages.