There is also a paid version without advertisement.
Mini4WD Lap Timer V2 Pro byNSDev
Please use all means.
How to play
1) Place the phone with the camera facing on a track lane. Keep it still.
3) Press start, the timer will start when the car passes.
(You don't need to calibrate.)
Q. Can be calibrated when it is started, if the terminal is moved, how to calibrate again?
A. You can be done from the calibration of the menu.
Q.It seems there is a difference in the accuracy of the time by the phone...
A.Yes. There are differences in the accuracy of the time by the phone. It seems to vary depending on the preview frame rate of the camera phone.
Q. Is it possible to silence sound?
A. Yes, I can be changed in the options. If you do not mute the sound will increase the accuracy of time.
Q. It will get the lap timer or start with the vibration of the car and shadow.
A. Please try to increase the value of sensitivity. Number to the left, which is displayed in the camera at the value, is the right sensitivity(threshold).Please set number of value is greater than the sensitivity only when the car was Tsu horizontal skills. In addition, I can also specify the maximum value of the millisecond intervals to get the lap. Car does not count the lap beside me skills within milliseconds that you specify, you can prevent inadvertent count.
Requests are welcome.
Please your post to app reviews.
Original app is Mini4WD Lap Timer by Pimentoso.
This app has been created and have received forgiveness Pimentoso.
Mini4WD is a trademark of Tamiya, inc.
There is no relationship at all Tamiya, inc and this app.
1.0.0 first version
1.0.2 You can now speed is measured by setting the distance of the course. And extend the functionality.
1.0.3 Added a course of Oval Home Circuit. And add the reading features of lap time.
1.0.5 You don't need to calibrate. fixed some bugs.
1.0.6 Fixed a bug where the camera does not start on startup
1.0.7 Added a feature shared with the text data storage.
1.1.0 You can now specify the orientation of the screen.
1.1.1 change required is android 2.3 or more
1.1.2 Add menu in the upper-right corner for Android 4.4 or higher