Race Buddy: Lap & Drag Timer

For track day drivers, drag strip racers and tuners. Pair RaceBuddy ONE, RaceBox, Dragy or RaceHF — measure 0-60 mph, quarter mile, sector times, lap deltas, and real-world horsepower in one app. Used at 1,000+ sanctioned tracks worldwide by track day enthusiasts, autocross drivers, drag strip racers, motorcycle riders and performance tuners. Designed for closed-course use only — sanctioned circuits, drag strips, autocross courses. Not for road or street use. POWER & TORQUE — REAL-WORLD DYNO • Measure horsepower and torque from a single clean GPS pull • Smart Garage AI fills drivetrain, weight, gear ratios and frontal area • Compare power gains across mods, tunes and fuel • No chassis dyno needed LAP TIMER & TRACK DAY COMPANION • Professional GPS lap timing with sector splits • Automatic circuit detection at 1,000+ tracks worldwide • Live delta timing — real-time lap improvements • Ideal lap calculation from your best sectors • Track maps with racing line analysis • Compare laps against your best or any public Leaderboard lap DRAG STRIP & ACCELERATION • 0-60 mph, 0-100 km/h, 1/8 mile, 1/4 mile, 1/2 mile times • Predicted 1/4 mile ET — projected time live, mid-run • 60-foot rollout, slope correction, density altitude compensation • DIFF time vs your selected reference run • Compare runs side-by-side • Rolling acceleration from any speed • Braking performance measurement • Real-time speed display up to 25 Hz GPS accuracy • G-force meter for launch and braking analysis VIDEO & DATA OVERLAY • HD recording with synchronized telemetry • Green screen export for post-production • Overlay onto your existing video — Drag & Laptimer • Custom overlay layouts (PRO) • Up to 4K resolution and portrait orientation (PRO) • Picture-in-picture track map • Speed, G-forces, lap times, temperatures, RPM-derived data • Story and Post cards for Instagram and TikTok ADVANCED TELEMETRY & ANALYSIS • Density altitude for accurate tuning • Weather and temperature tracking • Detailed session history and statistics • VBO and CSV export • Telemetry import from other devices VEHICLE MANAGEMENT • Rich car profiles with variant data • AI fills unknown specs (gears, weights, drivetrain, more) • DCT, CVT, manual and automatic transmissions supported • Track multiple vehicles with per-car performance history • Power-to-weight calculations SUPPORTED GPS DEVICES (Bluetooth pairing required) • RaceBuddy ONE — connect and use for free • Dragy, Dragy Pro • RaceBox Mini, Mini S, Micro • RaceBox.cc • RaceHF External GPS device required. The phone's GPS is not supported — accurate timing needs a high-frequency, low-latency receiver. WHAT'S FREE vs PRO Free: connect RaceBuddy ONE, full lap timing, full drag timing (0-100, 1/4 mile, 60-foot, etc.), session history, VBO export, 1080p landscape video overlay export. PRO unlocks: connect any third-party GPS device, Power & Torque measurement, DIFF time, Compare Runs, Compare Laps, custom branding, custom overlay layouts, 2K and 4K export, portrait orientation, Picture-in-Picture, front-camera dual recording, custom track creation, premium support. PRO is available Monthly, Yearly (with 7-day free trial), or as a one-time Lifetime purchase. PERFECT FOR • Track day enthusiasts • Autocross and time attack drivers • Drag strip racers • Performance tuners and dyno operators • Driving instructors and students • Motorcycle riders Disclaimer: For closed-course and track use only. Always prioritize safety. Not intended for street racing or high-risk driving. Drive responsibly and obey all traffic laws. RaceBuddy uses Apple's standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/