Speedbox Digital Speedometer vs GPS Race Timer

Digital Speedometer is a free GPS based digital head up display (HUD) that shows useful speed. It is very useful if you want to verify your vehicle speed when cycling, running, flying, sailing. The display can be switched between normal viewing and HUD mode which mirrors the display for viewing asa a reflection in a vehicle windshield. Also displays the longitudinal and transverse slope of the car, in degrees, the magnitude of ascent and descent in percentages. Features: Current speed (choose MPH, KMPH or KNOT) Average speed Maximum speed Show Current time HUD Display head-up (mirror affect) Display road name Display speed limit of the road Display current weather condition Display compass Display odometer Shows speed camera locations and warns

Measure acceleration times such as 0–60 mph, 60–120 mph and 1/4 mile directly with your iPhone — accurately and without extra hardware. The app is designed so it doesn’t need to be operated while driving; you just set everything up beforehand while stationary. Measurements then start automatically — when the target speed is reached or when a start is detected. You can save results locally on your iPhone and, if needed, export them or transfer them to other devices. Preset timers: 60 ft, 1/8 mile, 1/4 mile, 1/2 mile, 1 mile, 0 – 60 mph, 0 – 120 mph, 50 – 75 mph, 60 – 120 mph, 0 – 100 km/h, 0 – 200 km/h, 80 – 120 km/h, 100 – 200 km/h. All timers are, of course, fully adjustable. The free version measures up to two times per run. How to use the app: Check the timer settings on the start screen. If everything looks good, place your iPhone in the car where it has good GPS reception and is held securely, then start the acceleration test. You can adjust the timer configuration in the Settings screen (just tap the relevant timer). Then return to the race screen and follow the previous instruction. Optional PRO version (in-app purchase): 1. Up to four timers in parallel (instead of two) 2. Precise determination of elevation differences 3. Simulation of a Sportsman start and reaction-time measurement 4. No ad banners