Trumpet handles look on a trumpet in B just on the Android smartphone and assign.
Use it to Tonsuche to grips to handle find music to handle search for notes.
It can be selected in the options between handles on a Bb trumpet in B or C. Also, the display of the complete fingering chart is possible.
This application allows you to use the site http://link.tillmenke.de/trpgr (trumpet handles) without Internet access on an Android smartphone.