LapTrax is an advanced, camera-based lap timer that works without transponders or GPS, ideal for runners, RC vehicles, and multi-racer events. It supports four modes and tracks up to four participants on a single device, with privacy-focused on-device processing. With 10,000+ total downloads and 240 in the last 30 days, it’s a proven tool for athletes, coaches, and enthusiasts.
Pros & Cons
Camera-based timing eliminates the need for hardware transponders
Supports up to four racers on a single device
Live announcements and race summaries enhance pacing and visibility
Privacy-focused: no data is transmitted to servers; data remains on-device
Limited to 4 racers per race
Lacks GPS-based live tracking and telemetry features that some competitors offer
Reliance on camera-based tracking may require adequate lighting and camera availability
About LapTrax - Advanced Lap Timer
LapTrax - Advanced Lap Timer was a sports app developed by Protocol Apps. It was removed from Google Play Feb 5, 2025 and is no longer available for download.
Download Statistics
LapTrax - Advanced Lap Timer had been downloaded 34 thousand times before it became unavailable.
User Ratings
LapTrax - Advanced Lap Timer was rated 4.07 out of 5 stars, based on 250 ratings.
App Information
LapTrax - Advanced Lap Timer was free to download. The APK download size was 4.74 MB. The last available version was v2.67. The last update was on January 6, 2023.
Technical Requirements
LapTrax - Advanced Lap Timer required Android 5.0+ or higher. The app had a content rating of Everyone. The app had been available on Google Play March 2017.
Description
Race anywhere, anytime!
World's first automatic, camera-based lap timing app for athletes, coaches, and RC vehicles, including vehicles/multirotors/quad/drones. Great for runners, swimmers, sports (hockey,soccer,etc), anywhere you run drills, training routines, sprints or races. NO TRANSPONDERS, GPS OR EXTRA HARDWARE NEEDED! (and NO ADS)
Works great on an older/spare device (Android 5/Lollipop and up)
4 Modes of operation:
Manual/Tap: record laps for 1-4 racers by screen-tap, or by using headphone/bluetooth device buttons Motion Detection: use device camera to automatically record laps for a single racer ColorTrax: use device camera to automatically record laps for 1-4 racers based on a unique color on each racer Remote Link: listen to a race on your own device, great for spectators, or rc drivers
Using the advance, camera-based modes, you can register a race participant and the app will keep track of the lap times each time they pass by the camera, automatically. Track up to 4 colors or participants with one phone! Great for athletes, coaches, RC vehicles and more!
FEATURES: - configurable starting countdown, including starting-gate lights - announcements of lap time, lap number, and comments during race - false-start detection, final-lap (bell-lap) sounds and announcement - race summary announcements (fastest/slowest/average laptime) - automatic start/restart mode when participants line-up at starting line/take their mark - Virtual Racers: race against any previous racer by reloading their laptimes - shareable race lap-time chart/graph, mix results from previous races - Photo Scrapbook: automatically takes photos of racer as they pass the camera - Bluetooth speaker and wired/wireless headphones compatible, listen to announcements, and start/stop/lap functions - CAST-compatible, send audio/video to chromeCAST TV for big-screen, scoreboard experience
PERMISSIONS: - Photos / Media / Files: for Photo Scrapbook, Save to Gallery option - Storage: for Share Chart option - Camera: for camera-based lap tracking options - WIFI/Bluetooth/Network: for local remote link functions and crashlytics reporting
- BETA TESTERS NEEDED: join beta group
- click here for Protocol-Apps.ca website / discussion - click here for RCGROUPS.COM online discussion forum
PRIVACY POLICY: - Crashlytics reports do not contain any personal information - No data or other information is transmitted, or sent to any servers - User preferences/settings are stored on device
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Comments on LapTrax - Advanced Lap Timer for Android
★★★★★
Fantastic App! I love the display and motion detection! Spoken lap times are tremendously valuable! Works flawlessly on S9+ I would like to see a YouTube video on how to use each function. A listing of laps and times at the end of a race would be nice. It only gives a partial list. I would love to see a Minimum Lap Time option to weed out false double lap captures like what can happen when your RC car crashes in front of the camera. Whomever it was that made this app, Great Work!!!
★★★★★
Using this app for HO slot cars on my Android phone this app works great. Made a bracket to suspend the phone over the racetrack out of foam core board and this is all I need to keep track of laps and Times of laps you have to play with it a little to learn what all the little buttons and gizmos do. Perfect for the home track and way cheaper than any other lap counter and timer I have seen
★★☆☆☆
Motion detect works ok but only with 1 car on track, color detect doesn't work well with red cars and not at all with red/white cars. The app also freezes occasionally (countdown doesn't start) and the final lap 'buzzer' still sounds even when deactivated. Saved files can't be deleted "in app" as far as I can tell. Overall the app suffers from limited functionality at least with my phone (Huawei P Smart 64gb) Hate to be critical as the app has potential and is free but only 2 stars from me.
★★☆☆☆
Can only add one racer for motion. Very seldom does color Trax even work. If you only need lap time for one racer, then this is the app for you. This was used for HO slot car track.
★★☆☆☆
Go to work one time with two players no matter what I can do it will not work with two players it won't even open the goddamn camera no matter if you give it permission to every time there's a different problem
Technologies used by LapTrax - Advanced Lap Timer
19 permissions·15 libraries
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Trust & Safety: The app requests a broad set of permissions (location, camera, storage, internet, Bluetooth, etc.) to enable its camera-based timing, local data handling, and remote link features. Privacy notes from the provider state that Crashlytics reports do not contain personal information and no data or other information is transmitted to servers; user preferences/settings are stored on device.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
