iPhone Screenshots


Track Day Genius is the ultimate video and performance logger for race and track day enthusiasts - 2 and 4 wheels alike. Designed to be simple yet intuitive, our UI and visual analysis tools gives you insight to enhance your on-track performance. Show us your Genius!

- Real-time lap timing (accurate to 1/100th sec)
- Predictive lap timing
- Video sessions (record up to 1080p/60fps HD video direct from your iPhone)
- Telemetry overlay for video sessions
- Track line overlay on maps with 4 colour data zones; to visualise acceleration, coasting, light braking and heavy braking
- 700+ preloaded race tracks with Leader boards
- Dynamic vehicle profiles

Accurate lean angle detection (iPhone must be mounted to the vehicle), with the combined use of iPhone telemetry data and GPS algorithms the following parameters can be analyzed and compared:
o Speed
o Acceleration/deceleration rate
o Distance
o G-force (linear+lateral)
o Cornering G-force
o G-force (linear+lateral)
o Altitude
o Slope
o GPS accuracy
o GPS rate
o Time difference (lap compare mode)

- Import session data from friends and members you follow
- Compare up to 3 session files from either your own data, from friends or members you follow
- Export RAW GPS data via email or Dropbox
- Configure video sessions to record Race day/qualifying or track day events
- Pause/resume the recording during the sessions (not available for video session)
- Video session play back and analysis of iPhone telemetry data
- Customise your data view between 5 different view:
o G-meter
o Data graphs
o Full screen video or compact screen
o Map/satellite view
o Video + Map (aka Genius view)
- Session summary, all the relevant stats from a completed session.
- Video session export with telemetry data overlay to YouTube (direct from your iPhone)
- Publish your session data and vehicle profile to TDG Leader boards

- Create dynamic vehicle profiles, record and track your vehicle set-up session by session
- Export and share you vehicle profiles via TDG Leader Boards, email and Dropbox

- Personalize your user profile with body and vehicle data for leader board uploads/filtering
- User profile data is required to save track sessions for leader board uploads/filtering, also for the TDG 'Market place'
- FREE sessions via TDG Rewards for loyalty and activity
- Create multiple user profiles for friends and students

- Share your best sessions via Facebook, Twitter, Airdrop, Dropbox or email.

******Full Bluetooth®-enabled OBD-II support coming August 2018*******
******Live Video streaming coming August 2018*******

What's New

Version 1.1.9

1. Introducing Geni, your Session analysis bot
2. Improved session analysis, giving you more insight into your performance,
- Most improved Sector
- Sector Losses
- Session analysis for Acceleration,Braking, Max Speed
3. Navigational tweaks
4. Video export for GoPro video with telemetry overlay (We now support video export with 2 video sources.)
5. Under the hood UX improvements
6. Telemetry overlay enhancements, visualising your Accle and braking

Customer Reviews

4.8 out of 5

5 Ratings

5 Ratings

Awesome trackday timer


Great performance logger: TDG is more than I expected, it's not just another iPhone Laptimer, there's a lot more to it! There are some genuinely good features that helped me understand my on track metrics - braking/acceleration and improved my riding ability' it's really that good! The recent release added a feature that allows 'File imports' from 3rd Party accessories, since I'm not keen on mounting my iPhone on my bike, I set up the trip recording feature on the Dual XGPS160 (external GPS) after I finish my session, TDG syncs the imported .kml file from the Dual XGPS160 with the track Database, it finds the nearby track and any sector data! I get to see all my laps and sector times, Its a shame I can't upload to the leaderboard, yet! Highly recommended!

Great visualiser


I only have one word, awesome! The direct import from the Dual XGPS160 is a God send!

Outstanding app, love the video thumbnail view..


Easily the best data-logger I've ever used, no lie. Its a bit colourful, if that's your thing, you'll love it. I used it while on holiday in France, at the 'Le mans' circuit - a red letter' car track day, despite the 1Hz gps, the trigger accuracy was perfect, more impressive is the sector analysis features, telling me which was the 'best' and 'most improved' sector was the icing on the cake. Thereafter, I didn't mind paying for the session data, its worth the price, its far more than just a lap-timer, its Genius, love it!


Avant Garde Associates Limited
131.1 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
© Avant Garde Associates Ltd
In-App Purchases
  1. Single Session £2.99
  2. Group Buy £5.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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