Skidometer

A speedometer that keeps up. iPhone's GPS reports your speed once per second - that's a hardware limit no app can change. What apps can change is what happens in between, and most of them do nothing, which is why their numbers lurch a second behind you. Skidometer reads speed straight from the GPS chip's Doppler solution, then uses the motion sensors to carry the reading forward between fixes at up to 120 frames per second. The result responds to your foot in about a tenth of a second instead of a full second. - Full-screen seven-segment display, readable at a glance - Choose 0, 1 or 2 decimal places, and how large the digits are - Portrait or landscape, with a rotation lock for mounted phones - MPH, KM/H or knots, from a button in the top bar - Red on black for night, black on white for daylight glare, or pick your own two colours - A signal indicator that tells you how good the GPS fix is, and dims the number when there isn't one - No account, no ads, no tracking, no network access at all. Your location never leaves the phone. Skidometer is a supplement to your vehicle's own speedometer, not a replacement. Please keep your eyes on the road.