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…
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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…
Why HTTPS Won’t Save Your Checkout Flow: Building Zero-Trust State Machines in Kotlin Multiplatform
How to protect multi-step workflows, fin-tech funnels, and Server-Driven UI from step-skipping, state tampering, and replay attacks — with zero runt…
Do We Really Need Reflection or Code Generation for JSON in Kotlin? Building a Lightweight JSON Library
Building a lightweight Kotlin/JVM JSON library with a direct JSON representation and optional reflection-based mapping between JSON and Kotlin class…
Как добавить новый сценарий в существующее Android-приложение без технического долга
Привет! Меня зовут Ирина, я Android-разработчик в SimbirSoft. Хочу поделиться с вами опытом разработки новых функций и рефакторинга существующих мод…
Android System Design: A Complete Guide for Android Developers
Android System Design: A Complete Guide for Android Developers Modern Android development is no longer only about creating screens and connecting AP…
Pragmatic AI-Driven Workflows: Refactoring Legacy Kotlin Code with Gemini in Android Studio
Maintaining legacy Android codebases often feels like taking care of an ancient engine while driving on a highway. Thousands of production apps stil…
Deferred Deep Links in Android: Complete Integration Guide
Same problem as always: a user without your app taps a link, gets routed to the Play Store, installs, opens the app — and lands on the default launc…
I Let a Coding Agent Render Android UI Without an Emulator. A Screenshot Wasn't Enough.
When a coding agent changes Android XML, it is fairly confident about what it can read: it finds the layout, understands the constraints, and produc…
JetBrains Releases Ktor 3.6.0 with HTTP/3 & OpenID Connect Support
Lead JetBrains announced the launch of Ktor 3.6.0 on September 18, 2026, marking a major milestone for the open‑source Kotlin web framework. The new…
Architecting Battery-Efficient Geofencing for Automated Sound Profiles
It was the middle of a Friday afternoon prayer session at the local masjid. The room was heavy with silence, a collective stillness that felt almost…
Building a Gemini-Powered AI Assistant for Android XR Glasses with Kotlin
Building a Gemini-Powered AI Assistant for Android XR Glasses with Kotlin Current Android XR note: Android XR supports immersive and augmented exper…
Kryzz AI v1.1 — open-sourcing a local-first Android AI workspace
I open-sourced Kryzz AI: a private, local-first Android AI workspace for chat, voice, and tool-driven agents. Affiliation: I built this. MIT. The Gi…
Optimizing Geofencing: Lessons from Battery Management in Android
Opening hook The silence in the lecture hall was heavy, the kind that only exists right before a professor begins a final exam. I was three rows fro…
Vesper Design Diaries: Building a Production-Grade KMP App on a Bootstrap Budget
On September 3rd I launched Vesper , a cross-platform Christian prayer app for Android and iOS, as my entry in the RevenueCat 2026 Shipaton . This i…
What I Learned Building an Android QR & Barcode Scanner
Building a QR and barcode scanner for Android taught me that the hardest part is not simply detecting a code. The real challenge is turning scanning…
The Freedom of Pet Projects
In June, I learned how to change diapers and convinced myself that 5 hours of sleep is a luxury. Somewhere in between, I also shipped iOS for Kombin…
I installed a crash reporter and it crashed my app 100% of the time
This is a submission for DEV's Summer Bug Smash : Smash Stories. TL;DR. I wired Sentry into my Android app behind a careful guard so that a build wi…
Eleven tables, zero indices, and the observability I added afterwards found three more bugs
This is a submission for DEV's Summer Bug Smash : Clear the Lineup. TL;DR. My app recomputes every coaching verdict from raw training logs on read.…
I Built an AI That Auto-Replies to Your Instagram DMs (No Login Required)
I Built an AI That Auto-Replies to Your Instagram DMs (No Login Required) Managing Instagram DMs is a full-time job. Whether you are a small busines…
Mongodb Partitioning
At Whoz , we build a SaaS platform that helps professional services companies manage their talent staffing. At the heart of our product lies a conce…
SimpleDownloader - an Android downloader manager library designed to simplify complex file downloading behind a simple API
SimpleDownloader got new features, API, and improved the stability. SimpleDownloader on GitHub: https://github.com/jeetarc/SimpleDownloader Added on…
Building a Voice-Controlled Robot with Kotlin and LLMs
Building a Voice-Controlled Robot with Kotlin and LLMs Introduction Natural-language interfaces can make robots easier to operate. Instead of select…
Building a Zero-Cloud Android Service: Privacy by Architecture
It happened during a quiet Friday sermon at the local masjid. The room was dense with silence, the kind that feels heavy and intentional. Suddenly,…
Architecting a Low-Power Geofencing Engine for Android
Opening hook The silence of the boardroom was absolute, the kind of stillness that precedes a major decision. I was presenting a project scope to a…
I Built a Filipino Cooking App That Recommends Food Based on the Weather
One question gets asked in Filipino households all the time: "Ano ang lulutuin natin?" Sometimes you already know. Sometimes you don't. And sometime…
I find reading hard, so I built a text-to-speech reader for Android — here's how
I've always found reading hard. Long documents slide off my attention, and I lose my place constantly. What I really wanted was something that would…
How to block apps on Android without an AccessibilityService
Almost every app blocker on the Play Store is built on an AccessibilityService . It's the obvious choice: you get a callback every time a window cha…
Architecting for Zero-Network Dependencies: Challenges in Offline-Only Geofencing
It happened during a quiet midday prayer. The mosque was silent, the atmosphere heavy with focus, and then—the unmistakable, high-pitched trill of a…
Kdrant: an idiomatic, coroutine-first Kotlin client for Qdrant
If you build on the JVM and want to use Qdrant , the official client is io.qdrant:client — and it's built for Java. Every call returns a ListenableF…