Building the Same Gallery Grid with Opus 5.5 and GPT-6 Sol in Rork — Choosing a Model by Its Effort Steps
Rork's model menu now lists Opus 5.5 and GPT-6 Sol. I built the same three-column gallery screen with both, compared their effort settings, and kept the code I'd actually ship. Here is what differed and how I chose.
Switching to Signed URLs Killed My Image Cache — Decoupling expo-image Keys from the URL
Signed URLs rewrite their query string on every expiry, so a URL-keyed cache never hits. Here is how to pin the key with source.cacheKey, what the cache read and write APIs actually return, and what changed when I re-ran the measurements.
When an Image-Heavy Rork App Quietly Bloats Its Cache and Dies on Memory — Field Notes on Measuring and Capping
In a Rork app where images are the product, expo-image's disk cache and resident memory creep up over a session and surface as OOM crashes. Here's how I measured the bloat, where I set caps, and what I trimmed on the delivery side — with working code, in the order that actually helped.
Why Wallpapers Look Dull on Device: Taming Display P3 in the Delivery Pipeline
The same wallpaper looked dull once set on device. The culprit was a mix-up between wide-gamut Display P3 and sRGB. Beyond embedding profiles, here is how to tell whether the pixels are truly wide-gamut, a pre-delivery gate script, and the Android wide-color story, across six wallpaper apps.
When Rork-Built Lists Stutter: Designing Image Caching and Prefetch
A FlatList from Rork starts stuttering once the images pile up. Here is how I restore smoothness with expo-image caching, recyclingKey, prefetch, and a move to FlashList, with the device numbers I measured.
Your Rork App's 'Documents & Data' Keeps Growing — Taming expo-image's Disk Cache
My wallpaper app's binary was 40 MB, yet 'Documents & Data' had ballooned to 2.4 GB. Here is how I diagnosed expo-image's unbounded disk cache and fixed it with cachePolicy tuning, thumbnail URLs, and generational cache clearing.
Slow Images in My Rork Wallpaper App: Switching to expo-image and What Actually Changed
A hands-on account of switching from React Native's default Image component to expo-image in a Rork-generated wallpaper app — with code examples, blur hash setup, and observable performance improvements.