Traverse surveying

We're proud of being the designer of tunnel program on mobile with more than 20 years of experience and hard work in projects dams:(Khoda afaring ,Siyah bishe ,Gotvand ,Dariyan) ,the subway system and etc. Facing problems of surveying, I’ve been trying to design applictions, android, VB, lisp and all programs which are in our telegram channel @naghshebardaraneparseh.
This app was used in 4 dams and several tunnels .I use this app in tunnel its length was 12 kilometers without access you can see calculation and picture in sample menu app menu.
You can see other apps also you can join to my channel and send serial for receiving password. I say that we don’t need computer for traverse because apps can help us.