I do enjoy this app I payed for the full version to save race data and the only down side I’ve found so far is the exporting of race file data through the app it doesn’t work properly I have not tried to file transfer on PC yet but when I do I will update this review. This app is spectacular I’ve been using it for rental karting at and outdoor track 40-45mph I have a iPhone 13 so the gps isn’t as great as it could be but I hold 1-7 meter accuracy from my jeans pocket. The feature of being able to draw your own track was extremely nice given the kart track wasn’t listed but I was able to outline it pretty accurately my lap times were only about .5 sec difference from the tracking the facility has on the karts. I haven’t been using for video only because technically speaking your not allowed to have your phone on your person when racing… hence the pocket. But the core data. Being able to create sectors and compare laps and having all the race telemetry filters ie. gforce,speed,elevation,braking/acceleration zones, is very useful lots of tools to play around with and it can have a great impact on how you drive in the future.

There is no better way to compare and analyze your performance and the vehicle performance than repeated tests of a fresh course. Because Auto Cross courses change every race, the slaloms, acceleration, braking and the shortest (and quickest) track are easier to spot in side by side comparisons that track addict provides. The set up for each race is easy and the ability to use RaceRender to create comparative movies is a great teaching tool as well. I have used it in 3 different cars in over 10 years of racing. I highly recommend it especially to rookies trying to better understand their own racing.

Giving 3 stars as when using on a iPhone the speed telemetry was spot on as it was using the vehicle data. Upgraded to iPhone 16 and now app used the gps data which is laggy and not helpful especially in analysis. However the app still captures the vehicle data and would be a great feature if you can select between gps data or vehicle data for speed options plus any others to which would be then overlayed on the footage. Please make this simple change! Other than that this app is perfect for my needs.

I love the app, it is super useful at the track, highly recommend. And the price isn’t that bad!I only took one star because there is no way to contact the developers, and the app does a beeping sound when it is recording and my helmet Bluetooth is connected to it.That beeping sound drives me crazy! And there is nothing I can do in the app to disable that nightmare beeping.In other words, to use this app in my phone, I need to disconnect the Bluetooth speaker from my phone every time.PLEASE remove that beep or add an option to disable it.I already paid for this app, but I would give $10 extra just to disable that beeping when I’m recording my sessions.That said, best app I used so far.Features I would love to see:* Option to redrawn the track, it happen to draw twice the track wrong due to GPS lack of precision, and I had to create a new track every time instead of being able to reset that drawing.* Option to export a video with only the track animation and telemetry, so I can overlay in my videos using another app.* Let it play all the laps in sequence, don’t need to watch one, click to the next, and so on… I want to watch a session from beginning to the end and compare every lap with the best lap in sequence.

I haven’t seen any apps even close to this level of functionality that don’t either charge exorbitant recurring subscriptions or bombard you with nonstop ads, so that’s already a 4/5. On top of that, the app itself just has crazy levels of functionality and give you almost all the data you could ask for. For the track, street drives, drag strips, off-road trails and everything in between this app really has got you covered. And 8.99 for the full experience? A no brained is an understatement. I could EASILY see Porsche, BMW, etc charging upwards of $1,500 USD for devices that do the exact same thing. All in all just an awesome app.

Some suggestions though: add a night mode, perhaps just dim the (recording) screen. Add a pause/resume recording: for some activities you don’t want to record everything, and now if you press stop recording it moves to another screen and the recording session is over, then you have to start over and not sure what happens if the car is already moving etc. Tap to pause, tap to resume, that’s it. Bonus: find and record the brake pressure, I know the Focus RS sends the brake pressure and steering angle on the HSBUS, not sure it can be queried through OBD though, but brake pressure would be fantastic, with steering angle a plus.

I love using this app to track runs on our annual hill climb, it’s super helpful to review each run and have video, but audio within the video is a recurring frustration. Sometimes the audio won’t play during playback, but fiddling with the silent mode switch or restarting the phone will usually bring it back. This weekend, however it apparently didn’t record audio for any runs even though the video is fine, and I can play audio from past years. This has been a recurring issue with the app for years and I wish the developers would build in a better test or something to ensure it’s recording correctly.

It is easy to use, it's inexpensive and does all I want. It communicates with my Bad Elf GPS unit and my Go point OBDII unit to generate, along with the camera in my iPad, a movie integrating my path, omnidirectional acceleration (separate x-y if you prefer), rpm, speed, gear, with any one of a few basic layouts to choose. It also has nice diagnostic tools (e.g., lateral g's along the path) easy to use on the fly. On occasion I use separately the data and movie files in my desktop for analysis or to make a more custom movie with software like Race Render. I'd give it 5 stars if not for the fact that it crashes at times, and it sometimes misses the start or end points of an autocross course.

I’ve been running this app for over 3yrs now and I really really like it. I connect my phone to an external GPS module that’s mounted under my rear view mirror. I’ve had this app at Road Atlanta, Roebling Road, Barber and Daytona with pretty good results. I say pretty good because on a cloudy day, the GPS signal is sometimes to weak and my video recording with data is sketchy. BUT, compared to some $1,000 units out there, this is very very very helpful. I also LOVE the fact that I can be ANYWHERE to include an airport toilet and I can review my data because it’s always with me on my phone! Love it 🤙

I tried the free App. It worked, but I wanted more (than 3 sessions). So I upgraded. So far I am using it with my iPhone 6+. Absolutely just worked perfectly the first time. I am using it on my Jeep with a suction cup windshield mount. My first mount purchase was a suction cup and flexible stalk to the phone holder. Way too much vibration. My next is an iottie Easy Flex 3. The sticky suction cup has incredible holding power, but still a bit of vibration through the rest of the structure, so I hot glued it. I have not tested it yet, but I think it will be acceptable. I need to find a better one for my Corvette for lapping days. I also plan to add an OBD II WI-FI interface. Just such a cool product.