Race Buddy: Lap & Drag Timer
0-100, Quarter Mile, Trackday
Free · In-App Purchases
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 prioritise 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/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Diff time feature performance optimisations
The developer, Imperio, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Mladjan Antic
- Size
- 127.8 MB
- Category
- Sports
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 7 more
- English, Croatian, French, German, Russian, Simplified Chinese, Spanish, Ukrainian
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- RaceBuddy Lifetime PRO USD 34.99
- RaceBuddy Pro Yearly USD 22.99
- RaceBuddy Pro Monthly USD 5.99
- Lifetime PRO USD 99.99
- Drag & Laptimer PRO Yearly USD 59.99
- Drag & Laptimer PRO Monthly USD 7.99
- RaceBuddy Pro Annually USD 9.99
- RaceBuddy Pro Monthly USD 1.99
- Copyright
- © 2026 Imperio