GPS Race Timer vs Velocity Lab Pro

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

Calculate your vehicles horsepower...with just a phone! Our app provides accurate HP measurements and more. Experience precision performance tuning like never before with Velocity Lab! Our advanced app harnesses the power of cutting-edge technology to provide you with precise and detailed performance data that lets you fine-tune your vehicle to perfection. With Velocity Lab, you'll have access to a wealth of features, including: • Accurate HORSEPOWER, 1/4 and 1/8 mile trap speed and times: Get precise performance data for acceleration and speed over these two critical distances. • Horsepower measurements: Accurately measure wheel horsepower without the need to pay big bucks to visit the track and Dyno. We promise its accurate, after all it is just physics and math. • EV Compatibility - Works with Tesla, GM, Ford Lighting, Ford Mustang EV or Porsche Taycans. • Track/Road Weather. Get important weather data that gives insights into surface conditions ensuring optimal grip and engine or turbo performance. • Interactive charts: Our easy-to-read charts and graphs provide you with a detailed breakdown of vehicle performance, letting you quickly identify areas for improvement. • Compare aftermarket parts: Find out if that cold air intake or new exhaust system is really helping your vehicle's performance. • Share functionality: Share your performance metrics with friends, family, or your local car community with our easy-to-use share functionality. Velocity Lab is perfect for everyone from car enthusiasts to professional racers. Whether you're looking to fine-tune your vehicle's performance or just curious about your vehicle's capabilities, our app is the ultimate tool for precision performance tuning. So why wait? Try Velocity Lab today and take control of your vehicle's performance! By downloading this app you agree to only use this app on closed courses on non public roads.