Enforcing a concrete performance budget for Expo EAS builds and OTA updates
The situation Say you are a mobile engineer on a small React‑Native team that uses Expo Application Services (EAS) for CI‑driven builds and over‑the…
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One .web.tsx in the whole app, and it is 196 lines of stack navigator that no phone will ever run
Munchable's phone app is also a website. Same Expo Router tree, same screens, exported with web.output: "single" and served at app.munchable.app . A…
Deep‑link crashes in Expo Router when the app hits real traffic
The situation You are a mobile lead on a React Native product that just shipped version 2.4 with Expo Router 2.1.0. The release added a “share‑to‑ap…
Unexpected UI glitches after enabling React Native Fabric
The situation Say you are the lead mobile engineer on a cross‑platform product that ships a daily active user base of ≈ 500 k. The next sprint’s mil…
I Built a Bilingual "Mini-Uber" for My Dad's Escalade Business
I Built a Bilingual "Mini-Uber" for My Dad's Escalade Business My dad drives a Cadillac Escalade. He's licensed in California (TCP permit — the real…
Google Play ads declaration: check formats before submission
A Google Play “Contains ads” declaration is a small release task with an app-wide answer. Before you submit, Play Console asks whether your app cont…
Android 15 edge-to-edge: fix screens before content hides behind system bars
Android 15 changes how an app’s window meets the edges of the screen. For apps targeting Android 15 (API level 35) or higher, edge-to-edge display i…
Six mobile app UIs you can tap through in a browser tab (Expo + React Native Web)
A screenshot of an interface tells you what it looks like. It doesn't tell you how it feels — what happens when you tap, how a sheet rises, whether…
Defending the 16ms Frame: A Performance Budget for React Native TurboModules
I was the first engineering hire at Synapsis Medical Technologies, where I owned the architecture for a HealthTech AI platform from day zero. We wer…
React Native vs Flutter in 2026: Which to Choose
Originally published on the MatrixInn Solutions blog . React Native vs Flutter is still the first real decision most teams make when they commit to…
Expo SDK 58 beta opens with iOS 27 support and a faster build pipeline
You update your simulators, iOS 27 drops, and every app you haven't rebuilt yet either misbehaves or just looks wrong on the new scene-based life cy…
Introducing Buoy.gg — in-app tools for mobile + web apps
When something breaks in production, the usual loop is slow: reproduce locally, dig through logs, guess at what the user saw, then ship a fix and ho…
Deferred Deep Links in React Native: Complete Integration Guide
If you've shipped a React Native app, you've probably wired up universal links / app links already. Existing users tap a link, the OS hands it to yo…
Why I built Animal Sudoku without a single ad
Screen time for children is broken. Most free games trade a childs focus for ad revenue. Flashing banners and loud interruptions shatter concentrati…
I Built SnapList to Make Product Research Less Messy
When I’m researching something I want to buy, I usually end up with the same problem: Too many tabs. Too many screenshots. Too many links. And event…
You Released an App. Now What?
Releasing an app feels amazing for about five minutes. You hit publish. You refresh the store page. Maybe you send the link to a few friends. Maybe…
OWASP Mobile Top 10 — M6: Inadequate Privacy Controls
Welcome to the sixth article in our OWASP Mobile Top 10 2024 series! In previous articles we covered M1 through M5. Today we reach the most unusual…
How to Hire a React Native Developer for Your Startup MVP
Your MVP hire decides how fast you get to real users and how much you'll spend rebuilding later. Here's how to actually get it right. Hiring the wro…
Claude Code on a React Native Codebase: Guardrails That Actually Change the Output
Every React Native developer has run the same experiment by now: point an AI agent at the codebase, ask for a feature, watch it produce something th…
Engineering RAG Pipelines That Survive a HIPAA Compliance Audit
When building Retrieval-Augmented Generation (RAG) systems for clinical environments, the technical challenge isn't the vector search or the prompt…
Hermes Bytecode and the Cold-Start Budget: Engineering Time-to-Interactive as a Product Requirement
In the lifecycle of a mobile application, the most expensive milliseconds are the ones that occur between the user tapping the icon and the first me…
How We Keep a Trunk-Based Pipeline From Being Reckless
Part 1 covered the mechanism: a fingerprint gate decides whether a change ships in minutes over-the-air or needs a full store release. But a gate th…
I shipped an alpha notes app where the home screen is the capture field
Miniout is a university notes/tasks app. UI is Spanish-only for now. The idea: you should not pick a folder in the middle of a lecture. Write first;…
Kryptix: A Truly Offline Password Manager Built for People Who Don’t Trust the Cloud
Most password managers today are cloud-first products wearing a privacy costume. You create an account. You sync. You trust a company, their servers…
Flutter vs React Native in 2026: A Technical Comparison
If your mental model of this debate is still "Flutter is fast, React Native is laggy because of the bridge" — that's a 2022 take. Both frameworks we…
Tired of broken React Native environments? I built a CLI to fix that
If you've worked with React Native long enough, you know the drill: everything worked fine yesterday, but today your project won't build because of…
Why Modern Banking Apps Need a Different Architecture: 5 Companies Worth Watching
Banking apps have become one of the most demanding categories of software to build. Customers expect transactions to feel instant. Product teams wan…
Ad-Hoc distribution vs TestFlight in React Native — a practical comparison
If you're testing an iOS build with real devices, you've got two main paths: Apple's TestFlight, or Expo's EAS Preview using Ad-Hoc provisioning. Th…
How to Inspect AsyncStorage, MMKV, and SQLite in React Native
A surprising number of React Native bugs come from persisted state. An old token, a stale cache, a feature flag that was never cleared, or a SQLite…
Google Play Requires Android 16 (API Level 36) by August 31, 2026 — React Native Migration Guide
Google Play has announced that starting August 31, 2026, all new apps and app updates must target Android 16 (API level 36). If you're maintaining a…