Technology
Posts about the stack, tools and patterns.
App removed from the App Store or Google Play — how to get it back
Removed, suspended or just not visible? The most common reasons apps are removed from the App Store and Google Play: policy violations, no updates, inactive accounts, expired Apple membership, EU trader status — and how to restore the app step by step.
Mobile app crash monitoring — Crashlytics, Sentry and Android vitals in practice
How to set up mobile app crash monitoring that actually works: choosing a tool, symbols and source maps, Android vitals thresholds, the crash-free users metric, alerts, GDPR in crash reports and gradual releases.
Mobile app modernization: migrating to Jetpack Compose and SwiftUI without rewriting everything
When migrating to Jetpack Compose and SwiftUI pays off and when it doesn't. How to do it gradually alongside product development, which pitfalls to watch out for and roughly what it costs.
How to transfer an app to another Google Play and App Store account without losing users
How to transfer a mobile app to your company's Google Play and App Store account while keeping users, ratings and reviews. What moves with the app, what doesn't, and the post-transfer pitfalls: push, keychain, Firebase and Sign in with Apple.
App not working on the new Android or iOS? What changed and how to fix it
Failures after a system update come in two waves. What changed in Android 16 and 17 and in iOS 26 and 27 — edge-to-edge, the back gesture, Liquid Glass, mandatory UIScene — how to diagnose it and in what order to fix it.
Updating an old Flutter or React Native app — how to upgrade the framework after years
Your Flutter or React Native app hasn’t been updated in years and won’t build? What most often blocks the update (null safety, the New Architecture, Gradle, 16 KB pages), in what order to upgrade the stack and how long it takes.
App rejected by the App Store or Google Play — what to do, step by step
App rejected by the App Store or Google Play? How to read the reason, what to fix in the first hour, how to reply to the reviewer, when to appeal and how to reduce the risk with the next release.
Mobile app release automation — CI/CD and fastlane: what it costs and when it pays off
A manual Android and iOS release takes 3–5 hours of work and one person who knows how to do it. What you can automate with fastlane and CI/CD, what the setup costs, when it pays off and where to start.
Refactor or rewrite from scratch — how to make the call on numbers, not gut feeling
A rewrite is tempting because it promises a clean slate — and it gets priced as if a clean slate were free. We show the real cost of rewriting, five questions that settle the decision, and the strangler pattern as a third way.
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