EcoTokens hooks into Claude Code, Gemini CLI and Qwen Code to filter noisy command outputs (git diff, cargo build, pytest…) before they reach the model. One install command. Zero config. Tracks your real USD savings in a live TUI dashboard.

Papimathic is a free mental math app for kids and adults, inspired by the classic Little Professor electronic toy. Practice addition, subtraction, multiplication, and division across 5 progressive difficulty levels. A dedicated multiplication table mode lets you drill any specific table at your own pace. Each session is 5 questions — get 5/5 stars to unlock a celebration animation and beat your best time. Short, focused, and motivating. Works fully offline. Available on iOS and Android.