Lapster Racing: GPS Lap Timer
Track day & kart, for RaceBox
Free · Designed for iPad. Not verified for macOS.
Works with RaceBox Mini S, Micro and Pro. No RaceBox yet? Time your laps with your iPhone's GPS and see exactly where the seconds go.
Lapster turns your RaceBox into a complete lap timer and telemetry system. And if you don't own one yet, your iPhone can time your laps too.
RACEBOX — ALL THREE MODELS
RaceBox Mini S, RaceBox Micro and RaceBox Pro. Connect over Bluetooth or Wi-Fi, pull the sessions stored on the device, and every lap is timed, mapped and saved automatically.
NO RACEBOX? USE YOUR PHONE
Start a session with your iPhone's GPS and get real lap times on any circuit. Live map, predictive delta, lean angle, and a separate 0-100 acceleration mode with its own personal bests.
EVERY LAP, IN DETAIL
• Replay any lap on the map at 1x, 3x or 5x
• Speed, position and time for every corner
• Put your lap next to a friend's and see where the time went
• Sector splits, top speed, G-forces and lean angle
TRACKS
Official circuits with verified records, plus tracks you build yourself — drop the start/finish line and sectors straight onto the map. Every track keeps a leaderboard of the riders on it.
TRACK DAYS
Find track days, book your spot, and read reviews from riders who were actually there — with their photos and lap times attached.
SHARE IT
Send a lap or a whole session with a link, post a story, or export a poster for Instagram. Your profile keeps every stat and badge you have earned.
MESSAGES
Direct and group chats with other riders, including voice messages.
ALSO INSIDE
• Import your existing rides from the RaceBox app (CSV)
• Weather recorded automatically for every session
• Your garage: cars and bikes, with photos
• Available in 14 languages
Free to use. Optional donations if you want to support development.
Lapster is not affiliated with RaceBox. RaceBox is a trademark of its respective owner.
Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Apple Watch: view sessions and lap times, chat with other riders, and record, play and transcribe voice messages. Includes watch face complications and Smart Stack widgets.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Your profile is a tab. The last tab is your own profile, and Settings open from the gear in its corner.
• Track records. A card on your profile opens your record lap for every track, and a record can be shared to your story as a poster.
• Messages. Reply to a message by swiping it or from its menu, and paste an image into the message box to send it as a photo.
• Track screen. The map runs to the top edge, the record card shows your best beside the record, and a track opens full screen from a session or lap.
• Ride Mandalika and Bangli. Pull down on the track page to open the game.
• What's new. Release notes now live in Settings, with a fire to tap.
• Team pages work like a rider profile, and timing sheets can be searched and filtered.
• Photo viewer. Tap to hide the controls, scrub with the thumbnail strip, and swipe past either end to wrap around.
• Lap screen. A button in the map controls turns it sideways without turning the phone.
• Apple Watch. Start and stop the RaceBox from your wrist, see the live ride, and play chat photos, videos and voice notes.
• Smoother and more responsive: 120 Hz on supported iPhones, and haptics answer saves, sends and syncs.
• Fixes. A connected RaceBox Pro stays in your devices list, Home opens without a spinner, a recording in progress survives a crash, the app no longer crashes when storage is full, and Home is no longer black when signed out.
The developer, Roman Milushov, 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 Linked to You
The following data may be collected and linked to your identity:
- Location
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Roman Milushov
- Size
- 62 MB
- Category
- Sports
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
English and 13 more
- English, Arabic, French, Fulniô, German, Hindi, Indonesian, Italian, Japanese, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
- Age Rating
13+
- 13+
- Contains
Messaging and Chat
User-Generated Content
Social Media
- Copyright
- © 2026 Lapster Racing
