Launchmeter vs LM

Launchmeter turns your iPhone into a performance meter. Find a safe, open space and measure your car's 0-60 mph time with one tap. ACCELERATION TIMING & SPLITS • 3-second countdown, then timing starts automatically when you pull away • Time several runs at once — 0-30, 0-60 and 0-100 mph — and set your own targets • Every split is compared with your personal best: green when faster, red when slower GPS + MOTION-SENSOR FUSION • Speed fuses GPS with your iPhone's accelerometer and gyroscope: accurate GPS gets more weight, the sensors fill the gaps between fixes • The launch moment is detected by the accelerometer, so the start isn't delayed by GPS updates • Hand shakes and road bumps are filtered out, so readings stay steady EVERYTHING AT A GLANCE • Big three-digit speed and a segmented speed bar • Friction circle for longitudinal and lateral G, plus a live G-force trace • Grade meter — tap to zero • Local temperature, humidity and pressure from Apple Weather, plus your iPhone's barometer RUNS & ROUTES SAVED • Speed and G-force traces, splits and route are saved on your iPhone for every run • Drag across the charts to replay any moment • Routes keep recording with the screen locked LAUNCHMETER PRO (OPTIONAL, ONE-TIME PURCHASE) • Weather-corrected times: air density, density altitude and SAE J1349 correction so runs compare fairly across seasons and altitude • Export CSV data and GPX tracks • Share cards with your splits and speed trace • Multiple cars: log and compare runs per car Everything else stays free forever. PRIVACY Your runs stay on your iPhone and are never uploaded. Location is only used to measure speed, record routes and look up local weather. SAFETY Only test on closed courses or where it's safe and legal. Obey traffic laws and never use your phone while driving. Continuous GPS use during a run increases battery drain. Results depend on GPS signal and phone mounting and are for reference.

Analyze vehicle dynamics in controlled conditions! Launchmeter is a vehicle motion data logger designed for automotive enthusiasts and professionals. The app uses GPS and device sensors to record motion parameters in controlled environments such as closed test tracks, autodromes, and private facilities. Motion interval analysis: • Time intervals for speed ranges: 0–60, 0–100, 50–150, 100–200, 0–200 km/h • Quarter-mile (402 m) with elapsed time and trap speed • Road gradient measurement to assess data validity Built-in speedometer — real-time speed display based on GPS, with maximum speed, distance traveled, and trip duration. Share results — export your data as a detailed statistics card. Sensor-based analytics — GPS and accelerometer fusion for reliable motion data recording. Multi-vehicle support — log motion data for passenger cars, performance vehicles, and other transport. SAFETY NOTICE: Launchmeter is NOT intended for use on public roads. This app is designed exclusively for data logging in controlled, closed environments — test tracks, autodromes, or other private facilities. A passenger should operate the device. The developer does not encourage speeding, racing, or reckless driving of any kind. Always obey all traffic laws. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/