WhatSpeed – GPS Tacho

WhatSpeed turns your iPhone into a GPS speedometer with three modes — all in one clean, distraction-free app.

DIGITAL SPEED Large, easy-to-read speed display with your current and top speed at a glance.

SPEEDOMETER Classic analog dial with a live speed readout — satisfying to watch at any speed.

ACCELERATION TIMER Measure 0–60 mph, 0–100 km/h, quarter-mile runs, or any custom speed target. Set how many runs you want, and the timer starts automatically when you move — no button tap needed. Your best time is highlighted after every session.

FEATURES · GPS-powered, no internet connection needed · km/h and mph support · Dark and light mode · Sound & vibration feedback when your target is reached · Clean, minimal design — no clutter, no ads

WhatSpeed uses your iPhone's GPS for speed measurement. Accuracy depends on GPS signal quality. Not suitable for legal speed control purposes.