LapTAR
GPS lap timer that coaches
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
New: a GPS lap timer with a co-driver in your ear. Pick a corner and it calls brake, turn, power on your optimal lap's points; it tells you which corner cost the time.
LapTAR turns your phone into a lap timer that coaches. It times every lap on GPS, shows the live gap to your own fastest possible lap, and tells you which corner — and which part of that corner — cost the time.
TIME EVERY LAP
Pair a RaceBox or Dragy GPS receiver over Bluetooth and drive. The track is recognised from where you are, the start/finish line is already drawn for the circuits in the library, and you can draw your own for a kart track or a hillclimb.
THE GAP THAT MATTERS
The delta on screen is not to your best lap. It is to your optimal lap — a physics simulation of what your car has proven it can do, on the best lines you have driven — so you are always chasing a time within your reach.
CORNER BY CORNER
Every corner is scored in four phases — braking, entry, apex and exit — against that optimal. Lights show where you gained and where you lost; the numbers sit underneath for later.
A CO-DRIVER IN YOUR EAR
At the line the voice calls the lap: a new best, or how far off. Pick a corner on the session's list and it is called through on every lap — "Next right. On my call." then brake, turn, power, full throttle, each word timed to land on your optimal lap's own point, the brake call earlier when you arrive faster. The corners you leave to the coach get the fix before — "Next left. Brake 30 metres later" — and better, worse or the same after. One to four corners a lap, your choice. When a corner goes wrong it says “Missed” at once and leaves the rest to you. Nothing to read at speed.
ANALYSE IN THE PADDOCK
Speed, delta and g traces per corner, laps drawn over the track on satellite imagery, and trends across sessions. Log the surface and your setup sheet with every session; the tyres and alignment the car was on that day stay with it, so a change in the garage never rewrites an old lap.
VIDEO OVERLAY
Export a lap as a data overlay — lap time, delta, speed, corner lights — ready to drop onto your camera footage in CapCut, DaVinci Resolve or Premiere.
ENGINE DATA
Add a Bluetooth LE OBD adapter for RPM, throttle and more, recorded alongside the GPS. Practising at home? LapTAR also takes Assetto Corsa telemetry straight from the game.
FREE, AND LAPTAR PRO
Your first track day is on Pro: everything on, all day. After that, Free records the first ten minutes of each session, or the first five timed laps when those take longer — counted down on the live screen, with the coach on one corner a lap; the session is kept like any other. Importing from other apps is free with no limit. LapTAR Pro, an optional in-app purchase (monthly or lifetime), records the whole session, every session; remembers the track (your best ever lap as the live reference, trends across sessions, earlier setups, laps from other days to compare); coaches up to four corners a lap and calls the corners you choose through; and adds clean, transparent and 4K overlays, advanced OBD (custom PIDs and alerts) and export to other apps' formats.
A free account is required — just an email and a password. It is the same account as on timeattack.run.
LapTAR Pro Monthly is an auto-renewing subscription: it renews each month until cancelled, and can be cancelled any time in your App Store account settings at least 24 hours before the period ends. LapTAR Pro Lifetime is paid once.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://timeattack.run/privacy
Ratings & Reviews
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New in this version:
• A GPS lap timer: pair a RaceBox or Dragy and see the live gap to your optimal lap.
• Corner-by-corner verdicts, live and after the lap.
• A co-driver in your ear: pick a corner and it is called through every lap — brake, turn, power, full throttle — on your optimal lap's points. The rest get the fix before and the verdict after; one to four corners a lap.
• Session analyser, track trends, a setup sheet, and the tyres and alignment of every session remembered.
• Data overlays for your onboard video.
• Engine data from Bluetooth OBD; Assetto Corsa for practice at home.
• Your first track day is on Pro. After that, Free records ten minutes of each session, or five timed laps when those take longer, with every feature on. LapTAR Pro, optional in-app purchase: the whole session, the track remembered across sessions, coach depth, clean, transparent and 4K overlays, advanced OBD, export.
• Sign in with just your email.
The developer, Sergei Belov, 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:
- Purchases
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Sergei Belov
- Size
- 69.6 MB
- Category
- Sports
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- LapTAR Pro, lifetime $39.99
- LapTAR Pro, monthly $4.99
- Copyright
- © 2026 LapTAR