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Harry's Lap Timer App

Posted by John_Beltz_Snyder about 4 years, 11 months ago

Harry's lap timer is a GPS based lap timer for your iPhone 4, 4S, and 5. It works seamlessly with the Phocus Accent or any of our other composite mounting solutions.  

Doing some data recording' seems to be a simple task in the beginning. Most users diving into the world of LapTimer come with an experience from 'all in one solutions' - these small gray boxes with very limited functionality. Although these solutions are designed on purpose, they need to be limited as they miss the rapid innovation, connectivity, and versatility current smartphones show.  

Compared to this all in one solutions, your iPhone is a really high-powered computer! Combine it with Harry’s Lap Timer software and you can quickly and cheaply get your hands on the world-class & incredibly feature-rich GPS lap timer. This can be extended in many ways to give you the best possible information and feedback about your on-track performance. 

This page gives you an overview on the feature groups. For more details visit LapTimer Documentation and our Harry's GPS Suite Forum.


  1.  Automatically starts and stops lap and sector timing using triggers

  2.  ‘No Touch’ operation on track

  3. Realizes accuracy better than 0.1s even with standard sensors

  4. Uses custom defined or preloaded triggers

  5. Includes a manual stop watch


  1. Stores all sensor data in its database for later analysis

  2. Offers a broad spectrum of export formats including Google Earth™

  3. Visually shows line driven and lateral acceleration

  4. Analyses braking and acceleration points

  5. Analyses corner and straight speeds

  6. Lap to lap comparison to analyze impact of line driven TP

  7. Histogram view on speed, lineal+lateral acceleration, and height


  1. Records HD and SD videos DP

  2. Automatically starts and cuts videos to lap length

  3. Allows dashboard overlaying of speed, G-forces, time lapped DP

  4. Exports data for external overlaying products

  5. Fully integrates with the iPhones / iPod asset library


  1. Driver positions broadcasted to server for online viewing TP

  2. Shows times lapped by track as a Hall of Fame

  3. Allows drivers to issue a yellow flag to fellow drivers on same track

  4. Can join data recorded on several devices in one database T


  1. Supports a large variety of internal and external sensors

  2. Dynamically connects / disconnects sensors

  3. Support includes GPS, G-forces, magnetic compass

  4. Support for external sensors (plugged in, WiFi, or Bluetooth)

  5. Native high accuracy access to external GPS sensors

  6. OBD II integration

  7. Calibrates and synchronizes all sources

  8. Supports high update rate sensors (e.g. 5 Hz) to improve accuracy


  1. To date, the online database has 295 predefined tracks

  2. Track shapes and descriptions by geography

  3. Certification allows distribution with high quality

  4. Add your custom track definitions and share them with your friends


  1. Internationalized units (length, speeds, power, ...), English, German, French localization

  2. Offers a variety of skins and display setting

  3. Huge number of specialized views to meet driver’s requirements P

  4. Allows customization of nearly everything

  5. Absolutely smooth and intuitive user interface

  6. Database with laps, tracks, vehicles (cars, motorbikes, karts), driver

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