The Complete Retrofit Lifecycle in a Real Android App
Most Retrofit tutorials show you isolated code snippets. This article traces the entire lifecycle of a Retrofit call — from app startup to data appear…
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Разработка плагина для Android Studio или Чистим безумную простыню логов в LogCat
Каждый Android-разработчик проводит в окне Logcat примерно треть своей жизни. И пока проект маленький, там всё хорошо. Но когда приложение разрастаетс…
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 (…
An AI Module Smaller Than a Smartphone Photo. Are We Underestimating the Computer We Carry Every Day?
The Idea and the Main Engineering Challenges Recently, I released a new offline AI feature for my Android application as a separate module. The entire…
Injecting WorkManager into ViewModels with Dagger Hilt. No Context, No Boilerplate, Always a WorkQuery Back
WorkManager is the right tool for deferrable, guaranteed background work in Android. But the default setup pushes you toward boilerplate fast: you end…
Приложение для изучения китайского. От идеи до прода
Всем привет. Хотелось бы поделиться своей историей выпуска Android-приложения для изучения китайского языка. С чего всё начиналось Всё началось с того…
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…
Я устал от бесконечных списков чатов и написал свой приватный мессенджер на гексагональных сотах (Kotlin + Go)
Привет, Хабр! Меня, честно говоря, просто утомили современные интерфейсы общения и навигации. Куда ни посмотри — в Telegram, Slack, WhatsApp, на почте…
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 …
On-Device Debugging And JUnit 5
This is the first follow-up to Friday's release post and it covers the two changes from this release that affect how you iterate on a Codename One app…
Wi-Fi ADB Lies to You: The Silent Disconnect Problem No One Talks About
All results from shipping Mac×Android tools as a solo developer. Tested across multiple Android versions including Android 16. I lost 4 hours to a sil…
Миссия выполнима: Как подружить Max и E2E
Это статья про небольшой хобби-проект, или как написать очень легковесный клиент для любого приложения с нуля. Идея зародилась, когда весь этот цирк т…
Как нам в Домклик LLM рефакторинг делала
Написал агента который за ночь переписал 100 тестов с Mockito на MockK, а за следующую — исправил 1700 ошибок линта. Спойлер: секрет не в крутом промп…
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 …
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…
"Reinstalling Won't Fix It": A Cross-App Shared-Auth Deadlock After Switching Phones
After migrating to a new Android phone, a few specific apps stopped launching. Amazon Shopping and Kindle would freeze on a blank white or black scree…
tapflow v0.3.x: Deeplinks, Keyboard Shortcuts, Screenshot API, and an Experimental MCP Server
Deeplink execution from the browser The one that came up most in real usage: testers frequently need to trigger deeplinks to verify specific app state…
Ищу ранних тестировщиков для Android-версии agent harnesses
Всем привет. По состоянию продукта это бета версия. Поэтому я не ищу пользователей, которые ждут готовый polished-сервис. Мне нужны люд…
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…
The Kimwolf Bust Just Outed Android Webcams as Botnet Fodder — Here's the Question Every Repurposed-Phone Camera Setup Has to Answer
On May 22, 2026, the U.S. Department of Justice announced the arrest of a 23-year-old in Ottawa for allegedly running Kimwolf , a DDoS-for-hire botnet…
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 …
Мессенджер HalChat теперь в Google Play: 3 года разработки, ИИ в браузере и квест с модерацией
Всем привет! Моему мессенджеру HalChat исполнилось три года. За это время он прошел огромный путь: из месива символов и сырых блоков превратился в ста…
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…
Adaptable apps on ChromeOS: a post-mortem
In my previous article Building a custom launcher for ChromeOS I described how Be nice runs on Chromebooks: not as a real default home app, because de…
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. …
Pragmatic Optimization in Mobile App Size: 3 Misconceptions
The Importance of Pragmatic Optimization in Mobile App Size In the world of mobile app development, I often see that app size plays a critical role in…