TopoDroid - Cave surveying on Android

TopoDroid helps you to take survey data and accurate sketches while you are in the cave, so that you can detect errors in the data while you are still on the spot and correct them. TopoDroid has many functions to help you get the most out of a surveying trip. In this way, by the time you finish it, a working map is almost ready.

TopoDroid is designed to work *ONLY* with the DistoX (versions 1 and 2), although the survey data can be also entered by hand. TopoDroid has DistoX calibration functions, as well as other advanced DistoX functions.
NOTE. These DistoX are not a Leica products.

TopoDroid handles one survey session at a time. It is not a cave survey project manager. For that purpose there are many good PC programs, and TopoDroid exports survey data in several cave program formats (among them: therion, compass, visualtopo, walls, survex), as well as dxf, csv, kml, trackfile, shapefile. Sketches can be exported as therion, csurvey, dxf, svg, shapefile, and png image.

Full list of features, user manual, and docs on https://sites.google.com/site/speleoapps/home/topodroid

DISCLAIMER
This app is open-source, free and ad-free. It has no warranty. By using it you agree that the author is not responsible for any loss of data you might incur, or damage whatsoever, including damages to DistoX devices.

ANDROID PERMISSIONS
- TopoDroid requires the following permissions: WRITE_EXTERNAL_STORAGE, BLUETOOTH, BLUETOOTH_ADMIN
- Certain functions depend on these permissions:
CAMERA, RECORD_AUDIO, ACCESS_FINE_LOCATION.
- INTERNET permission is necessary to install translations of the user manual.

BETA and OLD APKS
TopoDroid has an open-beta program: opt-in link on the website.
A few apks of old versions are available on the website.

TRANSLATIONS
M. Guerrero (spanish), D. Ros (french), A. Kozhenkov (russian), V. Georgiev (bulgarian), M. Keller (german), F. Toso (italian), H.-J. Luo (chinese), P. Suru (hungarian), R. Severo (potuguese), M. Jurecka (slovak), K. Borgiel (polish), A. Pologea (romanian)