# RaceChrono Pro > Motorsports lap timer, data logger, and video analysis app with extensive device support. (iPhone/iPad app by RaceChrono Oy.) - Source: https://appshunter.io/ios/app/racechrono-pro/id1129429340 (this page in markdown: same URL + `.md`) - Developer: [RaceChrono Oy](https://appshunter.io/developer/1056547888) - Category: Sports, Photo & Video - Price: $19.99 with in-app purchases - Rating: 4.70/5 from 174 App Store ratings · 141 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 43 MB - Languages: American English, Finnish, French (France), German (Germany), Italian, Japanese, European Portuguese, Russian, Chinese (Simplified, China), European Spanish - Released: 2017-03-02 - Data updated: 2026-08-27 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/racechrono-pro/id1129429340/reviews.md ## What is RaceChrono Pro? RaceChrono Pro is a versatile lap timer, data logging and data analysis app designed especially for use in motorsports, replacing your traditional lap timers and data loggers. The RaceChrono Pro app also enables you to record videos and overlay them with the logged data. RaceChrono apps have a strong following, currently over 100000 active users. If you look around at pits during your race or track day, chances are that you’ll see someone using RaceChrono. Even many professionals, such as factory test drivers and race driving instructors, are known to use this app! No matter whether you ride motorbikes, drive go-karts or cars, on closed circuit or special stage tracks – this is the motorsports app for you. RaceChrono Pro has following major features: • Lap timing with sectors and optimal lap • Track library of over 2600 pre-made race tracks • Custom user defined circuit and point-to-point tracks • Smoothly scrolling data analysis with synchronised graph, X/Y graph, map, video and comparison video • Predictive lap timing and time delta graph • Hardware accelerated video export with configurable data overlay • Multiple camera recording and picture-in-picture video export • Video recording using internal camera • Linking and synchronising video files from almost all action cameras • Support for external GPS receivers; Dragy Pro/DRG70/DRG70-C/Lite, RaceBox Mini/Mini S/Micro, Qstarz BL-818GT/BL-1000GT/LT-8000GT, Columbus P-9 Race, Dual XGPS 150/160, VBOX Sport, Garmin GLO • Support for OBD-II readers; OBDLink MX+ Bluetooth, OBDLink CX Bluetooth, Dragy OBD, Vgate vLinker FS, Vgate vLinker/iCar BLE, PLX Kiwi 3/4, Carista OBD2 Bluetooth, Tonwon BLE 1/2/Pro, Veepeak OBDCheck BLE, UniCarScan UCSI-2000, OBDLink MX Wi-Fi, generic Wi-Fi OBD-II • Support for Bluetooth LE heart rate monitors • Unlimited session length, good for 24 hour races • Session data export in .ODS (session summary for Excel), .NMEA, .VBO and .CSV formats ## Key features - 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 ## Pricing and in-app purchases Base price: $19.99. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Reference session 1 | $8.99 | one-time | | Reference session 3 | $0.99 | one-time | | Reference session 2 | $4.99 | one-time | ## Chart rankings - #14 in Top Paid · Sports (US App Store) ## Recent user reviews (10 of 141) All indexed reviews: https://appshunter.io/ios/app/racechrono-pro/id1129429340/reviews.md ### 4/5 — Great app Bad UI *2026-07-20, version 10.2.4* 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. ### 3/5 — Great…when the UX doesn’t get in your way *2026-06-25, version 10.2.4* 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 ### 5/5 — Awesome !! *2026-06-19, version 10.2.3* Simply the best ### 5/5 — Racebox mini is connecting now *2026-06-15, version 10.2.2* Great app! I had issues with racebox not connecting. But learned that you need to disconnect the other apps. Works great!! ### 5/5 — App incrível *2026-06-05* Simplesmente incrível e completo telemetria completa ### 5/5 — Profissional *2026-05-23* Aplicativo excelente para utilização com receptor de GPS externo. Utilizo com o JGPS da @DriveCopilot fabricado no Brasil e os dados ficam perfeitos! ### 2/5 — 定位数据不准 *2026-04-11* 最新版用谷歌地图一样定位偏移，完全没法用？ ### 4/5 — 大疆！DJI *2026-03-27* 希望能支持大疆的运动相机做为摄影机，gopro已经out啦 ### 5/5 — gopro13への対応 *2026-03-24* 3月8日にサポートに問い合わせた時点で、「あと2週間程度で対応したアップデートを提供できる！」という返事をもらったので、アップストアの審査も考慮して、今月末かな？と期待大です！ ### 4/5 — RaceChronon is my preferred datalogger on IOS *2026-03-07, version 10.0.0* My viewpoint is coming from some who is a cone dodger, not a track person, but I think if anything the app will work better for track usage. My 3 suggestions to go from a 4 start to 5 star app would be: 1) let me install the iPad version on my Mac so that I can review data on my much larger external monitor. 2) allow me to play back the run in slow motion (1/2 speed, or 1/4 speed for example). Inputs in AutoX are so fast that I’m always trying to pan through the run in slow motion to digest the elements and what the car is doing. Can’t do it in real time. 3) this may not be an iPad problem but at least on my phone the map by default is too zoomed out. I know autoX courses are smaller than tracks but the map by default is too far zoomed out on my phone to even see where in the run I’m looking at. I always need to zoom all the way in before I can look at any data, otherwise I have no context for where in the run I am. ## Frequently asked questions about RaceChrono Pro ### 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. ## Version history (last 5 releases) ### 10.2.4 — 2026-06-24 - Two GoPro cameras can now be remote controlled at once - Faster GoPro remote control connections - Added Settings option to shift data to align with Chinese map tiles - Added GPX exporter - Removed GoPro WiFi connection option - Many fixes ### 10.2.3 — 2026-06-17 - Two GoPro cameras can now be remote controlled at once - Faster GoPro remote control connections - Added Settings option to shift data to align with Chinese map tiles - Added GPX exporter - Removed GoPro WiFi connection option - Many fixes ### 10.2.2 — 2026-06-12 - Two GoPro cameras can now be remote controlled at once - Faster GoPro remote control connections - Added Settings option to shift data to align with Chinese map tiles - Added GPX exporter - Removed GoPro WiFi connection option - Fixed Google Maps swipe back gesture glitch - Fixed Few crashes - Fixed GoPro remote control sync points were no longer added if session was resumed ### 10.2.1 — 2026-06-06 - Two GoPro cameras can now be remote controlled at once - Faster GoPro remote control connections - Added Settings option to shift data to align with Chinese map tiles - Added GPX exporter - Removed GoPro WiFi connection option - Fixed Google Maps swipe back gesture glitch - Fixed Few crashes ### 10.1.3 — 2026-05-06 - Created new video list for sessions, which allows adding and importing video files easily to the session. New files containing GPS data are now automatically linked to the session (GoPro, DJI Action, Insta360 and Garmin video files are supported). - Added Video storage in Main screen menu for video file housekeeping - Added GoPro 13 remote control and improved older models - Added GoPro sensor data import from LRV files - Added DJI Action sensor data import (GPS remote needed) - Added Insta360 sensor data import (GPS remote needed) - Added PGear P620/P525 support ## Apps similar to RaceChrono Pro | App | Rating | Price | Category | | --- | --- | --- | --- | | [TrackAddict](https://appshunter.io/ios/app/trackaddict/id632355692) | 4.5 (512) | Free | Sports | | [dragy·Lap - New GPS Lap Timer](https://appshunter.io/ios/app/dragylap-new-gps-lap-timer/id1617703369) | — | Free | Sports | | [Race Buddy: Lap & Drag Timer](https://appshunter.io/ios/app/race-buddy-lap-and-drag-timer/id1440030429) | 3.6 (11) | Free | Sports | | [LapTrophy - Track Lap Timer](https://appshunter.io/ios/app/laptrophy-track-lap-timer/id1244558686) | 4.8 (271) | Free | Sports | | [LITPro - GPS Lap Timer](https://appshunter.io/ios/app/litpro-gps-lap-timer/id940870782) | 4.6 (327) | Free | Sports | | [POWER TUNER App](https://appshunter.io/ios/app/power-tuner-app/id1235945328) | 3.1 (80) | Free | Sports | ## Related topics [chrono race](https://appshunter.io/ios/topics/chrono-race) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*