How I Built an ATS Resume Builder App for Android (And What I Learned)
After months of watching friends get rejected by job applications they were qualified for, I discovered the real culprit: Applicant Tracking Systems (…
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Your coding agent's barcode scanning code looks right … and breaks in the field
Coding agents write barcode scanning code that compiles and passes review, then falls apart on a damaged label. Here's how we taught them to get it ri…
OpenAPI, ORM, SVG and Lottie
This is the third follow-up to Friday's release post . Saturday's was about how you iterate; yesterday's was about new platform APIs in the core; toda…
AI, OAuth, And Other Platform APIs In The Core
This is the second follow-up to Friday's release post . It covers the platform APIs that moved into the framework core this release. There are two hea…
I wasted 6 weeks on Google Play's closed testing. Here's what finally worked.
I need to vent. And maybe save someone else from the same nightmare. The backstory I'm a solo Android dev. I've been working on my app for about 4 mon…
I built a word puzzle RPG where you swipe letters to attack enemies — 2+ years solo, now live on Android
I just launched Kotobato on Google Play after about two and a half years of solo development. It's a word puzzle RPG — you swipe connected letters on …
Submitting to App Store and Play Store as a solo developer - what actually happened
I submitted Termique to the App Store and Play Store three days ago. It's live now. Here's what the process actually looked like, because most guides …
Why Mobile Push Notifications Don't Arrive: 3 Critical Reasons
Mobile Push Notifications: Mysterious Disappearances and Technical Realities Mobile push notifications are one of the fastest and most effective ways …
How WhatsApp Works Without Internet: Offline Messaging and Synchronization Explained
Imagine you're traveling on a flight with airplane mode enabled. You type a message to your friend: "Hey, I just landed. Will call you soon." You tap …
Production Android Auth: OAuth2, PKCE & KeyStore Security
Most Android authentication tutorials stop at “getting the token”. But in real production systems (especially fintech apps), that’s just the beginning…
Building a Native QR/Barcode Scanner for React Native — New Architecture Ready
Most QR scanner libraries for React Native share the same problems — they're unmaintained, they don't support the New Architecture, or they pull in a …
# Giving an LLM Eyes and Hands on a Mobile Simulator
The interface a human uses When a person does QA in tapflow, the loop is: Look at the simulator screen Decide what to do (tap, swipe, type) Do it Look…
I Built an Android App With Zero Backend — Here's What Happened
I got tired of apps trying to monetize my attention. Notifications, ads, endless feeds — it never stops. So I decided to build an Android app with zer…
Vestige: A Gemma 4 Brain Tracker That Won't Blow Smoke Up Your Ass
This is a submission for the Gemma 4 Challenge: Build with Gemma 4 TL;DR What: Vestige —an ADHD-friendly Android app designed to point out the things …
My first Android App - NightLock
I built my first Android app called NightLock — an open-source digital wellbeing app focused on Focus Mode, Bedtime Lock, and app usage control to red…
The Sleeper Announcement from Google I/O 2026 That Will Change How We Think About Apps
This is a submission for the Google I/O Writing Challenge Everyone walked away from Google I/O 2026 talking about Compose First, Gemini integrations, …
AccessLens — a blind person's lanyard, powered by Gemma 4 on-device
This is a submission for the Gemma 4 Challenge: Build with Gemma 4 What I Built AccessLens is an Android app that turns a Pixel 8 worn on a lanyard in…
Skills, Java 17, And Theme Accents
Last week was about Metal and the Skin Designer. This week the headline items are about what a brand new project looks like when you generate it: the …
R8 Minification Silently Killed My Android App's Core Feature (And Tests Didn't Catch It)
My CI pipeline was green. Unit tests passed. The APK built and signed without errors. I installed it on my Pixel 3. The app launched, looked perfect. …
AndroidAppLockscreen: drop a PIN lockscreen into any Android app in minutes
most android apps that need any kind of auth go straight to biometrics or firebase. fine — but what if you just need a simple PIN lockscreen? no backe…
Metal and Skins
This post has a lot to cover. Before we get to any of it I want to take on the uncomfortable subject first: quality. Two incidents from the past two w…
Termux App Store — A TUI Package Manager for Termux
Hey everyone, I’ve been working on a project called Termux App Store — a terminal-based app store / package manager experience designed specifically f…
How I built GitHub Store to 12,500 stars in 6 months — I started at 16
Six months ago I was a 16-year-old in Uzbekistan trying to ship a small Android app I'd built. The Play Store process was so heavy for what the projec…
Building OrinIDE — A Browser-Based IDE for Android with AI Support
Building OrinIDE — A Browser-Based IDE for Android with AI Support For a long time, coding on Android has felt awkward. Most mobile coding apps are ei…
CalyxOS on Android 16: I Ran It on a Motorola G45 5G (India Variant)
After a year of silence, CalyxOS is back — and it's running on a ₹10,000 phone with a locked bootloader. Every privacy OS article you've ever read has…
I built a voice agent for Android in a weekend. Here's what actually worked
Yesterday I posted this on X: https://x.com/22Gstudios/status/2051377769414791582 LetItDo is a voice agent for Android that actually finishes tasks. S…
padb: A TUI for Android Debugging That Lives in Your Terminal
If you've spent any time doing Android development from the command line, you know the rhythm: adb devices , adb logcat , adb shell , repeat. It works…
Advanced MVVM in Jetpack Compose: Search, Pagination & Cross-Module Triggers
User types "android" into your search box. That's 7 API calls if you wired it the way I did the first time. A few months later I shipped a pagination …
Push notifications, the iceberg under one feature
It's a one-line item on the roadmap. "Send a push notification when X happens." Estimate is two days, three if the backend doesn't have FCM credential…