A free program for Android, by Alex Bakaev.

The Shift Light is an amazing application for Android devices that lets you see where you should shift. 

To get the best results, it is recommended to start the application and then enter the distance in meters and the gear shift point. You can use the slider to adjust the distance and the indicator to determine the right point. It is also recommended to use the Shift Light with the Torque Pro application.

To use the Shift Light, open the application, select “Shift Lights Pro” and then select “4 Indicator Types”. The menu is displayed and you can select one of the four indicator types. The first one is recommended. To adjust the visual indicators, open the menu and select “Settings”. The last option is the most recommended.