Development journal
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Written by: Jonathan Reis on
Pass one UTM campaign from an institutional site to an app landing page, Google Play, and Android's Install Referrer without joining people across analytics projects.
Written by: Jonathan Reis on
Use one editable icon source, an opaque iOS raster, and a transparent Android adaptive foreground so launcher masks do not crop your artwork.
Written by: Jonathan Reis on
After nine Play uploads on versionName 0.1.0, lint overwriting production config, and ambiguous build script names, we documented SemVer rules, dev/prd commands, and why lint must not regenerate config.
Written by: Jonathan Reis on
A practical release checklist for AdMob UMP in an Expo/React Native Android app, covering GDPR messages, US state privacy messages, app store linking, and the SDK gate before ads can request.
Written by: Jonathan Reis on
A win-screen celebration overlay fell behind the result cards and dropped too fast. The cause was React Native's sibling paint order, not a missing z-index. Here is why zIndex alone is not enough on Android and how we fixed both bugs.
Written by: Jonathan Reis on
We wanted physical-keyboard input in a React Native game on Android. The classic hidden TextInput trick failed under Fabric because showSoftInputOnFocus is ignored. adb proved it, and a config plugin fixed it for good.
Written by: Jonathan Reis on
How one React Native sound setting ended up owning gameplay effects, Android tap feedback, and a double-toggle bug in a nested Switch.
Written by: Jonathan Reis on
A practical field note on fixing a missing native splash after an Expo SDK upgrade by moving from the legacy splash block to the expo-splash-screen plugin.
Written by: Jonathan Reis on
A field checklist for tying one Google Play test purchase to RevenueCat credentials, the Play Console order, sandbox data, SDK identity, and Sentry.
Written by: Jonathan Reis on
How to separate what a Google Play build has proven from SDK, billing, ads, and observability gaps before inviting more testers.
Written by: Jonathan Reis on
How to build a local Expo/React Native AAB for Google Play and still validate signing, Firebase, Sentry, AdMob, RevenueCat, and Play delivery like a real release.
Written by: Jonathan Reis on
A release bug where Google Play installed a new Android versionCode while the React Native JavaScript bundle still reported the old Sentry release.
Written by: Jonathan Reis on
A margin and operations breakdown for deciding whether an indie app should pay RevenueCat or own Google Play Billing support itself.
Written by: Jonathan Reis on
A practical order for getting developer identity, payments, public profile, account groups, signing keys, and legal pages ready before a first Google Play upload.
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