Open Source

ESP32 Web Serial API: Live Sensor Data in Next.js

What we built An ESP32 plugged into a PC over USB, with a web app (Next.js) connecting directly to the serial port through the Web Serial API and sh…

PureHub v1.0.0‑beta.59 – Security‑first Android utilities

PureHub v1.0.0‑beta.59 – Security‑first Android utilities PureHub continues its mission of providing 26 free, no‑ads, privacy‑first, open‑source uti…

Гравицапа для GPU: OpenGL ES на Kotlin DSL на примере 3D-“Жизни” Конвея

Привет, Хабр! Наконец-то я закончил работу над новым большим блоком RedByteFX, тем самым, который в планах звучал скромно: “а ещё было бы неплохо Op…

How to Publish Your First Android App on Google Play: A Complete Checklist

How to Publish Your First Android App on Google Play: A Complete Checklist Publishing your first Android app on Google Play involves more moving par…

Анатомия клиента Telegram на Compose Multiplatform: матрешки TDLib 1.8, стеганография словами и грабли первой альфы

Решил написать свой Telegram на KMP за 30 дней. Что может TDLib и с чем у меня возникли проблемы Пока искал работу, решил р…

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…

Why I Built an Unbypassable, 100% Offline Android Focus App with Kotlin & Jetpack Compose

The Problem with 99% of App Blockers We’ve all been there: You download a screen time tracker, set a 30-minute Instagram limit, and the moment you c…

Architecting for Zero-Data Privacy: How I Implemented Android's Local-Only SQLite Architecture in Muffle

The Silent Crisis I was sitting in the front row of a Friday Jumu'ah prayer. The imam had just begun the khutbah, the room was perfectly still, and…

Easy Full Stack Authentication and Login in the Style of Spring

Three requests leave your app just as its access token expires. If each refreshes independently, the first exchange can invalidate the refresh token…

How apps spot an Android emulator (part 1): build props and kernel tells

How apps spot an Android emulator (part 1): build props and kernel tells I spent a few days this month poking at a stock Android emulator to answer…

Run opencode on Android: a free launcher that turns your phone into an AI coding station

opencode` is a terminal-based AI coding agent for your own machine. But what if "your machine" is the phone in your pocket? OpenCode Android is a fr…

Android on iOS, Web & Desktop Efficiently and for Free

We are not the first to bring Android to iOS. Earlier projects brought Android's runtime along with the application. Dalvik was built for Android, i…

Unexpected UI‑Thread Jank When Using Reanimated 4 Worklets

The situation You are a mobile engineer on a small React‑Native team (React Native 0.73, Reanimated 4.5). The sprint goal is to implement a draggabl…

The Screenshot Was Ready. The Status Bar Wasn’t.

A practical Android screenshot workflow for controlling battery, carrier, signal and status-bar details before export. The app screen looked right.…

Stop Bypassing SSL in Flutter: Solving the Missing Intermediate Certificate Nightmare with AIA Chasing

Stop Bypassing SSL in Flutter: Solving the Missing Intermediate Certificate Nightmare with AIA Chasing Every Flutter developer has run into this mad…

Termux Copy code Output to Clipboard

📋 Stop Copying Terminal Output Manually! Meet ca , a Clipboard Shortcut for Termux Tags: #android #termux #bash #opensource If you use Termux on And…

Intune App Protection Policy Not Applying: A Read-First License, Targeting, and Check-In Triage

You assigned an Intune app protection policy (APP, also called MAM) for iOS/iPadOS or Android. Outlook still lets the user copy mail into a personal…

Building Custom Geofencing for Android Without Google Play Services

It happened during a critical team meeting. The room was silent, the project lead was outlining the Q4 roadmap, and then, my phone erupted with a lo…

Is Android App Protection Still Necessary After REA? How Should Developers Choose an App Hardening Solution in 2026?

Is Android App Protection Still Necessary After REA? How Should Developers Choose an App Hardening Solution in 2026? 1. Has REA Made Traditional APK…

Meet Kepta: Remember What Happened to the Things You Own

You lend someone a drill. A few weeks later, you need it and cannot remember who has it. You get your bike repaired. Months later, it starts making…

Google wants to host your personal vibe-coded apps in the Play Store

Google plans to help turn those personal AI-generated apps into wide releases.

Why Finding a PDF on Android Can Be Harder Than Saving It

Saving a file on a phone is easy. Finding it again three weeks later is a different problem. You remember receiving a PDF. You probably opened it. B…

Hidden program in cheap Android phones turns them into advertising tools from the factory

Bitdefender details Midnight Mimosa, a preinstalled firmware malware found on low-cost MediaTek-based Android devices across 150+ countries. The ana…

Android's external/ libraries: hunting n-days in code that upstream already fixed

"Android's external/ libraries: hunting n-days in code that upstream already fixed" (Alternative: "I built a fuzzing platform on a 2-core VPS. Here'…

How I Kept a 4K Media Client Under 1 MB (When Every Player App Weighs 100 MB+)

I build small software. My latest project, RKMovies, is a 4K-capable media client for Android and Windows that ships as a 0.91 MB APK. Not 91 MB — 0…

LineageOS 24.0 released

Sinete: a 2-player bluffing card game in Godot 4.6, and what I learned making it (looking for Android testers)

I'm Rapha, a solo dev from Brazil. Sinete is a 2-player bluffing card game made in Godot 4.6, and it's in closed testing on Google Play right now. I…

Google Play DEX Code Optimization in Capacitor Apps

If Play Console shows a "DEX code optimization" finding for your Capacitor app, the Android project template is the cause. From February 2027, Googl…

Conflicting Android beta reports: separating observations from verified bugs

Two reports from a small Android beta described different behaviour for the same breathing timer: one tester said it restarted after switching apps,…