KuaFu
Overlay FIT workout data onto action video
About KuaFu
KuaFu overlays workout telemetry from FIT files onto your action video so speed, time, distance, altitude, and GPS route stay in sync with every moment on screen. Pick a clip from Photos, import a FIT file from your bike computer or sports watch, align the timelines, choose a layout, and export a share-ready video — all processed locally on your device.
Features
📁 FIT-first import workflow
⏱️ Auto-align with manual offset fine-tuning
📊 Speed, time, distance, altitude & riding-time overlays
🗺️ GPS route overlay on video
🎬 Export at original or 720p / 1080p presets
🔒 100% on-device processing