It is a lap timer circuit dedicated magnet is embedded. It will receive the data via USB from a dedicated hardware of the magnetic sensor built-in. Therefore, it can be operated with only a USB host function compatible models. Please contact me by e-mail the person that do not know well.
This application is completely safe for downloading. Hisanao Kato is the developer of the app which is listed among the Sports category. Users rated Unlimited Lap Timer-SL Edition 4.3 on Google Play.
The latest update of this application was released on Apr 13, 2014 and the tool has been installed by over 50 users. Get the installer of Unlimited Lap Timer-SL Edition 1.1 that is available for free and read users' reviews on Droid Informer. The app is built for Android 3.1 and higher.