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🚀 Day 0/30: Building a Real Android App for a Client in Public

Today marks the start of a new challenge. For the next 30 days, I'll be building a real Android application for a client and documenting the journey p…

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…

Configuring Firebase AI Logic for Android to Use Gemini Models

What device do we use almost all the time? Our mobile phone, almost certainly. If we wanted to develop mobile apps, we would have wondered how to inte…

Jetpack Compose Navigation(Interview Prep)

About this article: This is based on hands-on review of a real project. The goal is understanding over memorization — because interviewers can always …

I Built a 1 MB Android Widget for DeepSeek AI – Here’s How It Works (and Why You Might Want It)

The problem : I love using DeepSeek AI, but every time I wanted to ask something, I had to: Unlock my phone and then find the DeepSeek app icon , wait…

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…

New reCaptcha requires approved phones to pass

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…

I made a censorship-resistant static website viewer with no serving host on Nostr

What I made I made an Android app called Bouquet . In short, it is a viewer that shows you a website, even though no server is serving that website. W…

I Built a Feature That Automatically Switches Android from USB to Wi-Fi — Here's How It Works

All tests run on an 8-year-old MacBook Air. All results from shipping 7 Mac apps as a solo developer. No sponsored opinion. You plug in your Android d…

🚀 Rebuilding My Android App with Jetpack Compose: The Mailfo v2.0 Journey

Hey DEV community! 👋 I just completely rebuilt and launched Mailfo v2.0 , an privacy-focused temporary disposable email app for Android[cite: 1, 2]. T…

Project Log #1: I'm Building an AI Agent That Controls a Phone

I'm starting a new project. It's the most ambitious thing I've attempted from a phone. The goal: an AI agent that controls a smartphone. It opens apps…

Remote Terminal – Control Your PC from Phone

Overview Remote Terminal lets you run a full command‑line on your Windows or macOS PC directly from your Android phone, iPhone, or iPad. After a quick…

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…

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 …

AnimaStage Lite v1.2.3 — Android studio, video export fixes & official MMD landing pages

We shipped a big update to AnimaStage Lite — MMD in the browser (WebGL + WASM) We just pushed a major update to AnimaStage Lite — a browser-native Mik…

WebSocket Half-Open Connections and gRPC Gateway Discovery in Complex LAN WebRTC Systems

The target scenario is not consumer calling. It is closer to B2B institutional device fleets: many shared devices, long-running uptime, centralized op…

Scroll Debt: The Anti-Workaround Pattern for App Blockers

The first generation of Android app blockers was, in design terms, a single switch. You set a daily budget, the app cut off the launch when the budget…

From Website to Mobile App: How I Used Capacitor to Build an Android App

From Website to Mobile App: How I Used Capacitor to Build an Android App Did you know you can turn your existing website into a native Android app wit…

Как оптимизировать картинки в Android и не сломать UX: метрики, практики и компромиссы

Если экран с картинками начинает тормозить, проблема редко сводится к одному AsyncImage. Разбираю, что действительно стоит измерять, как использо…

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…

Microsoft's Project Solara is an Android OS designed for agents instead of apps

Microsoft missed the boat on apps, so get ready for agents.

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…

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 …