GNU-Nivellus
App for Writing down and Calculating a Differential Levelling
...Then you can calculate heights, adjustment and allowable misclosure at the touch of a button. You can also display the vertical difference between two points.
Send the results using your mobile device. Then print the log with your desktop PC. Or import the data into your spreadsheet program.
Detailed information for users in German and English you can find on the GNU-Nivellus Website.