Philipp Jahoda
A chart library trusted by thousands of Android apps, a screenshot and recording app for Mac that AI agents can use too, an interval timer and an expense tracker for iPhone, and a trick shot game for iPhone and iPad.
Open source · Android
The chart library for Android. Line, bar, pie, scatter, candlestick, bubble, radar and combined charts with zooming, dragging, highlighting, markers and animations. Written in Kotlin, with a Jetpack Compose module, and used in tens of thousands of apps.
App · macOS
The screenshot and recording app for Mac. Capture anything, polish it in a powerful editor for images and video, or let your AI agent do it for you. Its built in MCP server and command line tool let Claude Code, Codex and other agents capture, mark up and edit, and you approve each agent first.
App · iPhone
Interval training without the fiddling. Set work, rest, sets and rounds, then hit start. Numerals you can read across the room, a haptic tap on every change, templates for the workouts you repeat, and a weekly streak that keeps you honest.
Game · iPhone and iPad
Pop every bird in fewer shots. An elephant fires bowling balls into the sky: aim, set the power, fire. 80 hand-made levels with bouncers, portals and wind zones, three stars and gold for your best runs, a level editor for your own, and progress that syncs over iCloud. Free, no ads, no account needed.
App · iPhone
Know your budget. Tap plus and type the amount, tell Siri, or point the camera at a receipt. Monthly overviews, budgets that warn early, statistics per category and iCloud sync, with your data staying on your device.
Smaller libraries and experiments live on github.com/PhilJay, including JWT, a Kotlin JSON Web Token implementation for Apple push notifications and Sign in with Apple.
