Resolving App Config in Three Layers: Merging Defaults, User, and Remote With Bounded Overrides
A single type-safe layer that merges compiled defaults, user preferences, and remote config. So a broken remote value never takes your app down, each key gets its own override strength, plus schema validation and range clamping, built from a real production incident.
Before Your Feature Flags Turn Into a Junkyard — Governing Naming, Staged Rollout, and Kill Switches Across Six Apps
Keep adding remote-config flags and within six months you have keys nobody remembers the meaning of. Here is a governance system — naming conventions, safe defaults, staged rollout, kill switches, and monthly cleanup — with the implementation from running six apps in parallel.
When and How to Remove Features Nobody Uses — Auditing and Safely Retiring Functionality in Rork-Built Apps
Unused features quietly make an app harder to maintain. A field-tested playbook from running six wallpaper apps in parallel — how to measure feature usage, decide what to retire, and remove functionality in three safe stages with Remote Config.
Building a Developer Debug Menu Into Your Rork App — Verify Ads, Purchases, and Remote Config Before Release
A production-safe developer debug menu for Rork apps — switch environments, force test ads, simulate entitlements, and override Remote Config, with working TypeScript code and the pitfalls I hit running six apps.
Tuning Interstitial Ad Fatigue Across Six Rork iOS Wallpaper Apps with Crashlytics and Remote Config
An implementation note from running six Rork-built iOS wallpaper apps in parallel and rebalancing interstitial fatigue with a three-layer frequency cap powered by Crashlytics non-fatal signals and Remote Config thresholds. Swift code, Cloudflare Workers config, and measured eCPM / D1 retention numbers from a four-week phased rollout.
Designing AdMob App Open Ad Frequency Without Hurting Retention — Operational Notes from Wallpaper Apps
Implementation notes from rebuilding the AdMob App Open Ad frequency design in a recent wallpaper app update. Minimum intervals, cold-start exceptions, and post-modal suppression are controlled dynamically through Remote Config, with Claude in Chrome handling the daily dashboard review.
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.
Making Feature Flags Survive Production: Kill Switches and Gradual Rollouts in Rork Max
Wire Firebase Remote Config into a Rork Max app, then harden it: kill switches that work offline, stable bucket assignment for gradual rollouts, and a registry that keeps flags from turning into debt.