TrailTimer: GPS Lap Timer
UTV lap timing, no account
Only for iPhone
Free · In‑App Purchases
iPhone
No account, no sign-up, no ads. Trade a code and your crew is timed together. Drive your course once and it builds itself. Live UTV engine data with a Bluetooth adapter.
The best timer app purpose-made for UTVs.
Drive your course once, slowly, and TrailTimer places the checkpoints for you. Then open the app, tap START, and drive. Checkpoints trigger themselves as you cross them, every run is logged, and the leaderboard updates before your helmet is off.
No account. No sign-up. No email, no password, no ads. Trade a short code with your buddies and your whole crew is on the same clock, on the same leaderboard.
SEE WHAT YOUR MACHINE IS DOING
Plug an inexpensive Bluetooth adapter into your machine's diagnostic connector and your speed, RPM, and engine vitals show up right on the timing screen. Most side-by-sides don't have the 16-pin car-style OBD port, and they don't need one: TrailTimer reads Polaris, Honda, Can-Am, Yamaha, John Deere, Kawasaki and other powersports machines off the connector they do have. Some machines need a pigtail cable to reach it, and some can't be read at all. We publish an honest per-machine list on our site, including the machines that don't work yet and the ones that never will.
BUILT FOR RACE DAY WITH YOUR CREW
You're the one who organizes it AND the one trying to win it. Line up the running order, watch riders on a live map while you wait your turn, and see times land on the leaderboard the moment they finish - hillclimbs, trail sprints, time trials on private land, whatever you and your buddies dream up.
SET UP A COURSE IN MINUTES
Driving it once is all it takes, or drop pins on the map by hand. Loops or point-to-point, forward or reversed. Your course is ready to race the same afternoon.
BUILT FOR THE TREES
Trees, canyons, and jacket pockets make other GPS apps struggle. TrailTimer shows you honest signal health before you launch, and if the signal blinks mid-run it recovers the missed checkpoints in order when it comes back, instead of throwing the run away. Every result syncs to your own iCloud the moment you stop.
GLANCE WITHOUT UNLOCKING
Your running time, checkpoint count, and gap to your personal best stay live on the Lock Screen, and in the Dynamic Island on iPhones that have one. Pocket the phone or leave it bar-mounted: the clock keeps ticking where you can see it, and your final time is still waiting when you cross the line.
RELIVE EVERY RUN IN 3D
Watch a flyover of your run over real terrain, with the actual line you drove and an elevation profile of the climb.
RESULTS THAT SETTLE IT
Leaderboards, split times, personal bests, and head-to-head comparisons, with like-for-like class filters so a 250 two-stroke isn't racing a 450. Share a clean results card to the group chat before the tailgate closes.
FOR THE BUILDERS: DIY CHECKPOINT TIMING
Want millisecond precision of rigs that cost thousands for much cheaper? Build the TrailTimer reader: one USB-powered unit that rides on your machine, with an antenna on the side. Then mark the course with cheap waterproof RFID tags. Every tag you pass is clocked automatically: at speed, in the dust, out of sight of the start line. It's transponder timing like the big races run. There's nothing to buy off the shelf yet. The full build guide is on our site, and ready-made kits are planned once enough racers are aboard.
WORKS WAY OUT THERE
No cell signal needed. Everything works offline in the dirt and syncs when you're back in range.
WHAT YOU NEED
• An iPhone. That's it: GPS timing works with no extra hardware.
• Optional, for DIYers: a build-it-yourself RFID reader plus course tags (guide on our site)
• Optional: a Bluetooth OBD adapter for live gauges
Free to time, score, and share. Your last 30 days of results are free. TrailTimer Pro keeps your full history forever, publishes unlimited tracks, and unlocks the post-run analysis deep-dive. Subscribe (with a free month) or buy it once to support a fellow side-by-sider.
Privacy Policy: https://tylerfit.ch/trailtimer/privacypolicy
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
YOUR CREW ON THE HOME SCREEN
Two new widgets: Friends' Runs shows the latest times from the riders you follow, and Next Event counts down to your next group day. Long-press your home screen, add TrailTimer, done.
READ YOUR MACHINE'S CODES
That check-engine light finally talks. The new Code Reader in Setup shows the fault codes your machine is broadcasting, over the same Bluetooth adapter that runs your live gauges, with plain-language names where we know them. Read-only on purpose: it tells you what's wrong, it doesn't pretend clearing it fixes anything.
THE WEATHER RIDES ALONG
Every run now remembers the conditions it was driven in. When the post-run debrief compares today against last week, it can finally point at the reason: colder, wetter, windier, and by how much.
THE ANNOUNCER FOUND ITS VOICE
Pick the announcer voice in Race Settings and preview it before race day. The countdown lands on the beat every time now, the intro finishes what it starts all the way through GO, and the start-line call mixes it up from run to run.
TELL SIRI TO START TIMING
Start and stop timing, ask for your best lap, or your last run, from Siri or the Shortcuts app. Say start, cross your start line, and you're racing.
Plus the Lock Screen race card now fits every phone it lands on, and an armed start that never fires cleans itself up instead of lingering.
Keep the field reports coming. Setup › Send Feedback goes straight to me.
The developer, TYLER W FITCH, 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:
- Location
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- TYLER W FITCH
- Size
- 16.2 MB
- Category
- Sports
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
4+
- 4+
- Infrequent
Contests
- In-App Purchases
Yes
- TrailTimer Pro (Annual) $39.99
- TrailTimer Pro (Monthly) $5.99
- TrailTimer Forever $99.99
- Copyright
- © Tyler Fitch

