GPS Race Timer vs SpeedLap

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

SpeedLap brings professional-grade speed tracking and comprehensive fuel management to your iPhone. Whether you're on a track day, testing your car's performance, managing multiple vehicles, or analyzing fuel consumption patterns, SpeedLap delivers the precision and features you need. Speed Tracking & Performance SpeedLap shows your current speed and calculates real-time averages for each section you're timing. Switch between MPH and KM/H instantly, with large, easy-to-read displays that use different colors so you can distinguish between current (green) and average (orange) speeds at a glance. Lap Timing Use the built-in stopwatch functionality to time your sections. Hit "Start" to begin tracking, "Lap" to mark a new section, and "Stop" when you're done. Each section gets its own average speed calculation, and everything is saved in your lap history. Vehicle & Fuel Management Track fuel consumption, costs, and efficiency across all your vehicles. Store detailed fuel entries including odometer readings, fuel prices, station locations, and optional car computer data (MPG, driving time, average speed). Calculate projected range, cost per mile, and analyze spending patterns with visual charts showing efficiency trends over time. Dynamic Island Integration When you minimize SpeedLap, your speeds appear right in the Dynamic Island. The compact view shows "CUR 25" and "67 AVG" so you can monitor your performance without opening the app. Long-press for the full dashboard with lap time and distance. GPS & Sensor Logging SpeedLap captures incredibly detailed data - over 30 different measurements per GPS point including your exact position, multiple altitude readings, course and heading information, plus accelerometer and gyroscope data. The app samples motion sensors at 50Hz and calculates G-forces in all directions. Data Import & Export Import existing fuel data from JSON format or export everything - speed tracking sessions, fuel records, and sensor data - to CSV, JSON, or direct SQLite database access. Perfect for power users who want complete control over their data and serious performance analysis. Visual Analytics Built-in charts show fuel efficiency trends, price fluctuations, monthly spending patterns, and statistical insights including best/worst MPG achievements and cost analysis across all your vehicles. Privacy & Data Control Your data stays completely under your control. All speed tracking and fuel data is stored locally using SQLite. Optional iCloud sync backs up to your personal iCloud account only - no third-party servers, no analytics tracking, no data sharing. Export capabilities ensure you're never locked in. Key Features - Large speed displays with clear color coding - Real-time updates every 0.1 seconds - Multi-vehicle fuel tracking with detailed analytics - Complete data import/export functionality - Background location tracking with permission - Session history with detailed breakdowns - Professional-grade sensor logging - Visual fuel efficiency and cost analysis - Clean, intuitive interface with tab navigation Requirements - iPhone with iOS 16.1 or later for Live Activities - Location permission for GPS tracking - Motion sensor access (automatically granted) SpeedLap combines real-time performance monitoring with comprehensive vehicle management, making it perfect for track enthusiasts, fleet managers, and anyone who wants detailed insights into their driving and fuel consumption data.