Box2D - A 2D Physics Engine for Games
Habit List - Create good habits and break bad ones with the app that keeps you focused.
Bullet - Share captioned video snippets of podcasts from any app
Momentum - Agile goal and performance management
Matali Physics - Matali Physics is an advanced, multi-platform, high-performance 3d physics engine intended for games, virtual reality and physics-based simulations.
Streaks - The to-do list that helps you form good habits.