100% On-Device AI • No Internet Required

Type Fast.
Play Anywhere.

A premium iOS speed typing game powered by a custom low-latency engine and on-device AI. Type infinite prompts, race your ghost, and track your stats completely offline.

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Engineered for Speed

A stunning UI packed with spatial glassmorphism, responsive offline LLMs, and native performance.

Custom Typing Engine

Experience sub-millisecond latency with a custom-built typing engine that diffs snapshots rather than intercepting keystrokes. Feel every character you type instantly.

100% Offline AI

Never type the same prompt twice. ThumbDash generates infinite, dynamic typing prompts entirely on your device using a local LLM.

Immersive Feedback

Experience every typo and completed word with precision Core Haptics and zero-latency synthesized sound effects.

WPM Detailed analytics over time
Accuracy Track per-character precision
Ghost Race against your past self

Stats & Ghost Races

Analyze your performance with beautiful Swift Charts. View WPM, accuracy trends, and race against a ghost of your personal best run in real-time.

Technical Specifications

Under the hood of our highly optimized Swift and C++ local stack.

Game Engine Custom snapshot-diffing typing engine (Swift)
LLM Inference llama.cpp / llama.xcframework (SmolLM2-360M Local Model)
Feedback Core Haptics & AVAudioEngine for synthesized audio
Analytics Swift Charts & Levenshtein Diffing
Hardware Support iOS 17.0+ (Universal Swift Concurrency, CoreDevice)