RaceChrono Pro

RaceChrono Pro

by RaceChrono Oy

184 ratings
144 reviews
$19.99
In-App Purchases

Details

Released
March 2, 2017
Updated
October 29, 2026

Features

Background Location Access

RaceChrono Pro screenshot #1 for iPhone
RaceChrono Pro screenshot #2 for iPhone
RaceChrono Pro screenshot #3 for iPhone
RaceChrono Pro screenshot #4 for iPhone
RaceChrono Pro screenshot #5 for iPhone
iphone
iphoneDuo
ipad
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About

This app serves as a comprehensive lap timer and data logger for motorsports, enabling users to record and analyze performance. It offers video recording with data overlays and supports a wide range of external GPS and OBD-II devices for enhanced accuracy.

✓Lap timing with sectors and optimal lap
✓Track library with over 2600 pre-made tracks
✓Data analysis with synchronized graphs and maps
✓Predictive lap timing
✓Video recording with data overlay
✓Support for external GPS and OBD-II devices
✓Unlimited session length
Show original description
+1

What's New in RaceChrono Pro

10.3.1

October 29, 2026

- Added iPhone Duo support - Added bar gauge for video overlay and live screen - Added support for Dexian D1 and DigSpice IV GPS receivers - Many fixes

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3

Subscriptions & In-App Purchases

$8.99

Reference session 1

Premium reference session

Charts

Top Paid

📉 17-1

Sports

This app dropped -1 position in Sports chart.

Last updated on November 1, 2026.

User reviews

Needs some improvement

For what it costs, I get other fun features with TrackAddict . Racechrono is missing more gauge design options. The landscape mode is bothersome since you have to press that button to allow the rotation for the camera. Also the app has issues exporting to the camera roll. Additionally, getting the GoPro to work with it is hit or miss and a pain.
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Please add perspective or track up orientation to map

So far so good. Connects to RaceBox Mini S quickly. For developer: would be helpful to enable map to not be north up all the time. Would be helpful for rally and hillclimb to be able to use map view as a live trace of map. This would be helpful for learning a road as it would show which section is coming up and not getting lost.
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Great timing system

The best AX timing system I have ever seen in my 27 years of enjoying the sport. Highly recommend

Great app Bad UI

It could be great. Someone should rethink the camera orientation lock thing, and separate record button. Putting it in. Settings where it records video when you click record session is obvious fix.

Great…when the UX doesn’t get in your way

I’ve used this app for 2 separate track days now. While I’ve found the overall quality of data, export options and GPS tracking to be solid, the UX is a complete nightmare, especially given that this is a paid $20 app. I had multiple sessions not record the video feed because the UX is not very clear about when the camera is active vs when it’s not. Not to mention, the whole landscape vs portrait orientation lock just adds more confusion because it can end up with the camera orientation locked but the overlay changed. Also why are both the “STOP” and “START” buttons shown as red? I literally missed my best session because there is no easy visual cue for whether the video feed is being recorded or not. This could be as simple as giving an option in the settings to always turns on and record camera feed when recording a session.

I was originally going to give it 4 stars instead of 3 because when it works, it is genuinely good. But someone else also brought up the UX issue and the dev response was “it’s a tool not eye candy”. As a dev myself, this is not a good sign.

I understand that when your work is up for public comments, it is not easy to see it get criticized, oftentimes unfairly. But the bad UX is a serious issue for an app that’s used as a tool for track days, where we don’t have time to fiddle about as our session is about to start. There are far more important things like safety measures to worry about rather than try to figure out if the app is recording the video feed or not
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FAQ

What does RaceChrono Pro do?

RaceChrono Pro is a versatile app for motorsports that functions as a lap timer, data logger, and data analysis tool. It allows users to record their performance, analyze lap times, and even record videos with data overlays.

What are the key features of RaceChrono Pro?

Key features include precise lap timing with sectors and optimal lap calculation, a large track library, detailed data analysis with synchronized graphs and maps, predictive lap timing, and hardware-accelerated video export with configurable data overlays. It also supports multiple camera recordings and linking with action cameras.

How much does RaceChrono Pro cost?

The app is available as freemium, meaning there is a free version with core functionality and a Pro version that unlocks advanced features. Specific pricing for the Pro version or any in-app purchases is not detailed in the provided description.

What devices are compatible with RaceChrono Pro?

RaceChrono Pro supports a wide range of external hardware, including various external GPS receivers (e.g., Dragy, RaceBox, Qstarz, VBOX Sport), OBD-II readers (e.g., OBDLink, PLX Kiwi), and Bluetooth heart rate monitors. It also allows video recording using the internal camera and synchronization with most action cameras.

Who is RaceChrono Pro designed for?

This app is designed for anyone involved in motorsports, whether they ride motorbikes, drive go-karts, or race cars. It is suitable for use on closed circuits or special stage tracks and is used by both amateur enthusiasts and professional drivers.