Tachys

Tachys

Tachys is a precision GPS speedometer for iPhone and Apple Watch. It keeps the speed display steady, handles signal loss honestly, detects the transport context automatically, and stores trip history locally.

Links

• Support
• Privacy Policy

Highlights

• Stable GPS speed with Kalman filtering
• Clear signal-loss and tunnel handling
• Automatic transport detection
• Live Activity and widgets
• Local trip history with GPX and CSV export
• Independent Apple Watch measurement and transfer to the paired iPhone

Developed by Code and Live.