Harry's LapTimer Grand Prix

Harry's LapTimer Grand Prix

By Harald Schlangmann

  • Category: Sports
  • Release Date: 2010-04-02
  • Current Version: 22.1.4
  • Adult Rating: 4+
  • File Size: 87.72 MB
  • Developer: Harald Schlangmann
  • Compatibility: Requires iOS 9.3 or later.
Score: 4.5
From 67 Ratings


Harry's LapTimer is the advanced tool for car enthusiast. It records all types of sensor data provided by your iPhone/iPod/iPad (or external sensors), combines them, and makes them available to optimize your drive. Over time, you will get insights on your car and in your driving, not known before. LapTimer offers more than 1000 predefined tracks world wide. With its assistants, it is extremely easy to setup - just click your track and drive. It fully automates your lap timing using GPS, and presents the results to all kinds of media. You are not limited to track driving only. For example, you may define your home and working locations as a 'track', collect statistics on different ways chosen, and analyze / optimize the time used every day. Want to show your drive to your friends? LapTimer generates beautiful in car video recordings with all kinds of data overlaid, ready to be presented - e.g. on youtube. Even without video, recorded data can be analyzed using purpose designed views, making it easy to analyze and improve your driving performance. Using online racing, you can use LapTimer in competition. LapTimer offers a Hall of Fame, allows watching you and your friends on track - all in real time. Compare your sector times, braking / acceleration points, and learn from each other. You can start with your plain iPhone in the beginning and add external GPS and OBD II sensors later, step by step, and as you need it. LapTimer itself comes in three different editions: LapTimer Rookie is the entry level with all you need for lap timing; LapTimer Petrolhead is the advanced version including lots of video features, and LapTimer Grand Prix is the edition for professionals including Multi Cam recording, and advanced sensor and analytics functionality. Please note that functionality depends on your device, the LapTimer edition chosen, and sometimes even external sensors added (like OBD II). Please visit our web page to get the full story. All edition can be upgraded later, all editions come with native iPhone and iPad support. There are quite expensive stand alone solutions for track days available. Be smart and own the leading edge tool simply by using your iPhone and LapTimer. Besides the professional area, there is no known solution that offers more functionality than LapTimer does - across the market. As our ambition is to offer the best tool, LapTimer is enhanced continuously. Please visit http://www.gps-laptimer.de for detailed information on versions, FAQs / documentation, in depth technology background information, online racing, and supported device configurations. Join our user community on http://www.gps-laptimer-forum.de to be involved in future development - all with first class support.



  • It takes some time to learn the app !

    By Babakweber
    Extremely complicated and freezing all the time, but the developers really good and he responds to everybody on his Facebook page it means he cares about costumers!!!
  • Great Lap Timer

    By Monotak
    You get more with this App than what you pay for. The only thing missing is a Desktop application to sync it to so overlaying videos is much much easier. Hopefully that could happen one day. But for now I love being able to see lap times and the data that goes along with it.
  • Way too buggy, cant give it zero stars

    By COSrunr
    Very frustrating, constantly drops settings, dumps calibration (and wants to calibrate using portrait mode, which I doubt hardly anyone uses), in short over half the time it doesnt work when it did just an hour ago. And considering to use it you will need an expensive mount, you dont go cheap when driving on the track in a fast sports car, it is a much bigger waste of money than you think. I cannot recommend you dont get this strongly enough. And since I've bought it it only gets worse; walk away!
  • Worth the investment

    By G92648
    Works great and reliable Could use some interface design update to look less like it was "built in the garage by a dude"😉 overall great value 👍 Makes track days feel like MotoGP
  • Excellent and very useful app!

    By speedracer1208
    I have used Harry's LapTimer many times on the track and it is awesome! It not only creates awesome videos to share with friends, but it is also a great tool to utilize that will make you a better driver. It definitely adds to my track day experience and I highly recommend it!
  • Perfect for trackdays!

    By Doctordre85
    I was searching for a user friendly, cost effective way to track my progress and it share it with the world, as I have just began riding my motorcycle at track days in Texas! The fact that LapTimer has so many tracks Pre loaded into its system for easy access makes this app a no brainer! Multi cam recording and then adding the track overlays are so awesome! I will be using Harry's LapTimer and the last track day of the season at COTA (Austin,TX). I can't wait to show off the footage. I have recommended this app to lots of my friends looking for a way to get lap times with out braking their bank accounts! It's easy to use and there is a lot of documentation available if you can figure something out. Plus the forum! Nothing compares to Harry's LapTimer!
  • Most unintuitive application ever developed

    By Wakebrdr1
    In preparation for my next track day I've purchased this app and have been trying it out around town. I think I've finally figured out the basics through trial and lots of error. MultiCam worked once, never again...can't figure out how to overlay external video from GoPro. Documentation online looks nothing like this version. Screens are impossible to navigate and make no sense, red flags everywhere with no clear direction on the problem or resolution. Time to take the core of what works well and start over with a new intuitive and simplified interface.
  • Great App!

    By Snowman529
    This is my favorite app on my phone. Fires up and works as expected every time. Video is great and love the overlay.
  • Difficult to use

    By Brian0010
    Bought this app with high expectations. The user interface for uploading and overlaying videos is incredibly difficult to use. Trying to get GoPro video as master video is almost impossible. It's not worth the effort. I'm a youtubers and make videos and vlogs so I know it shouldn't be this difficult. I finally got an overlay on a GoPro video but it required using a computer and then syncing the video it's still not perfect and the video is not separated per lap so I have to do that individually also. Waste of $28 for me.
  • Need better autox setup interface

    By zpower86
    App keeps quitting when I rename an autox track and create the start and finish. I should be able to set the finish line first if I choose. I have reset the s/f line by accident because I clicked "Autocross". There should be a pop up asking if I'm sure. I don't know what "purge" means. Why not use words like "reset"? I would like to be able to set the start line and then, while I'm walking the course, close the app or shut off the screen...then go back in the app and set the finish line. Add these and it'll be 5 stars! :)