Kotlin
How to Organize Your Audio Library on Android with Lyrico
Lyrico is a fresh open-source Android app that handles metadata editing and lyrics fetching directly on your smartphone, with JavaScript plugins powered by QuickJS.
Kotlin
41 projects Kotlin
How to Turn Your Google Location History into Smooth Route Videos
A tool that converts your Google Maps location history into smooth animated route videos. Supports desktop Python, Android, and iOS web version.
Kotlin
How to Search Torrents on Android Without Ads and Browser Redirects
A neat Android client for searching torrents across dozens of trackers simultaneously, without ads or browser redirects. Built with Kotlin and Jetpack Compose.
Kotlin
How to Intercept HTTPS Traffic on Android Without Certificates and Manual Proxy Configuration
Atlantis-android library from Proxyman lets you intercept HTTPS traffic on Android without certificates, proxy setup, or manifest modifications.
Kotlin
diKTat Turns Kotlin Code Review into an Automated Routine
DiKTat is a strict Kotlin code convention tool built on ktlint with 100+ checks, auto-fix capabilities, and GitHub Actions integration for automated code review.
Kotlin
A Simple Video Editor Built with Jetpack Compose and Media3 — No Ads or Trackers
A lightweight, ad-free video editor built with Jetpack Compose and Media3 for everyday trimming, rotation, and basic effects.
Kotlin
How to Translate Non-Localized Games Right on Your Android Screen
PlayTranslate brings real-time in-game translation to Android with offline support, AnkiDroid integration, and furigana overlays for Japanese learners.
Kotlin
How to Track Satellites Right from Your Phone and Why You Should Check Out Look4Sat
Thousands of satellites fly overhead daily. Look4Sat is an open-source Android tracker that calculates passes offline using GPS and TLE data.
Kotlin
How the legendary Google Sky Map survived on pure enthusiasm
How Google Sky Map survived on pure enthusiasm after Google discontinued it in 2011, and why developers should study its codebase today.
Kotlin
A Standalone AI Agent Right on Your Phone — Breaking Down OpenDroid
OpenDroid is an open-source autonomous AI agent for Android that turns your smartphone into an LLM execution environment with 12 AI provider support and 60+ ready actions.
Kotlin
FoodYou, or How I Searched for an Open Nutrition Tracker Without Subscriptions and Data Leaks
Polish developer created FoodYou, an offline Android nutrition tracker that respects your privacy, requires no account, and works without internet access.
Kotlin
How to Write for AWS in Kotlin Without Pain and Java Legacy
AWS Kotlin SDK offers native coroutines, Kotlin Multiplatform support, and on-demand code generation for lean builds — no more Java SDK v2 pain.
Kotlin
How the Official WooCommerce Android App Source Code is Structured
The WooCommerce Android app is a fully open-source Kotlin application that offers a practical look at real-world e-commerce architecture, testing strategies, and UI patterns.
Kotlin
How Legado Reader Works and Why an Android App Needs a Built-in JS Engine
A deep dive into Legado, an Android e-reader with a web scraper, JS engine, and local server built in — a surprising architecture for a reading app.
Kotlin
How to Turn a Dusty Tablet into a Full-Fledged Android Auto Display
Turn an old Android tablet into a full Android Auto display with Open Headunit. Supports wired USB and wireless connections, steering wheel controls, and works on devices as old as Android 4.1.
Kotlin
How to Run an Autonomous AI Agent with Linux Right on Your Smartphone
Aether embeds an Alpine Linux VM into a mobile AI agent, letting language models execute code locally on smartphones without external servers.
Kotlin
How to Take Back Control of Calls on Android with Fossify Phone
Discover Fossify Phone, a lightweight open-source dialer that puts you back in control of your calls without trackers, ads, or unnecessary permissions.
Kotlin
Running a Full-Fledged Linux with systemd on a Smartphone via Droidspaces
Droidspaces runs full Linux with systemd on Android using kernel namespaces—no PRoot slowdown, no chroot leaks. ~160 chars
Kotlin
ShizuCallRecorder Brings Back Call Recording to Stock Android Without Root
ShizuCallRecorder uses Shizuku and scrcpy to record both sides of phone calls on Android 12+ without root access or system modifications.
Kotlin
How One Kotlin Project Covers Android, iOS, Web, Wear OS, and AI Agents
A practical look at how one Kotlin Multiplatform project delivers shared business logic across Android, iOS, Web, Wear OS, and AI agents through MCP.
Kotlin
How the QuickNovel Web Novel Reader is Built in Kotlin
QuickNovel is a free open-source Android app that extracts clean text from dozens of web novel sites and turns it into neat offline books.
Kotlin
How a Developer Built the Best Tachiyomi and J2K Hybrid in the Yokai Reader
Developer null2264 created Yokai, an Android manga reader that merges the best features of Tachiyomi, TachiyomiJ2K, and TachiyomiSY forks into one cohesive app.
Kotlin
How I Stopped Struggling with DNS Settings on Android
A quick look at adns, a tiny open-source tool that puts Android's Private DNS toggle right on your home screen or notification shade.
Kotlin
How to Build Your Own PDF Powerhouse in Kotlin Without Sending Data to the Cloud
Build your own privacy-first PDF powerhouse with Kotlin and Jetpack Compose — no cloud, no ads, just offline power.