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/