TopoDroid app icon

TopoDroid

Cave surveying on Android

marco.corvi · com.topodroid.DistoX

Not rated yet 100K+ downloads v5.1.46 229.2 KB Android 4.0.3+ PEGI 3 · Everyone

  • Signature matches the Google Play version Details

At a glance

Latest version
v5.1.46 (501046)
Updated
Aug 7, 2026 (2 months ago)
APK size
229.2 KB
Requires
Android 4.0.3+ (API 15)
CPU support
Any (no native code)
Category
Productivity (app)
Listed since
Mar 20, 2021 (at least)
Website
sites.google.com/site/speleoapps/home
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

TopoDroid is an app by marco.corvi in the Productivity category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

Since version 5.1.40, the APK shrank from 4.1 MB to 229.2 KB.

What's new in v5.1.46

TopoDroid X

Description

From the listing uploaded by “appupdater”.

TopoDroid - Cave Surveying with Android IMPORTANT: The version on Google Play is old and will not be updated. Current version on: https://marcocorvi.altervista.org/caving/speleoapps/speleoapks/TopoDroidApks.html 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 DistoX, DistoX2, SAP5 and BRIC4. The survey data can be also entered by hand. TopoDroid supports DistoX calibration, and other advanced DistoX features. NOTE. DistoX is not a Leica product, and TopoDroid does not work with any Leica Disto. 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/SAP5/BRIC4 devices. ANDROID PERMISSIONS - TopoDroid requires the following permissions: WRITE_EXTERNAL_STORAGE, BLUETOOTH, BLUETOOTH_ADMIN - Certain functions depend on these permissions: CAMERA (photos at stations and legs), RECORD_AUDIO (audio recording station comments), ACCESS_FINE_LOCATION (entrances geolocation). - INTERNET, required only to install translations of the user manual. TRANSLATIONS (v. 5.1.40) 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)

Version history

3 versions are listed, going back to v5.1.40. Since v5.1.45 it requires Android 4.0.3+.

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Aug 7, 2026.
  • Certificate issued to “none” This is the certificate of the Google Play version.
  • Same certificate as the 2 other versions checked

Store checks and file details

  • Developer signature verified Aug 7, 2026
  • Validated against Google Play Aug 7, 2026
  • Signed byCN=marco corvi, OU=none, O=none, L=recco, ST=genova, C=it
  • Signing certificate (SHA-1)DF:C1:71:48:6F:87:A8:C0:BE:E2:1D:F2:7F:B8:F2:4C:77:51:04:FA
  • File MD5a5748df8833d42ef249bd15b62241bd1
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Required hardware & features

TopoDroid APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the TopoDroid APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is a5748df8833d42ef249bd15b62241bd1.

Tags

More Productivity apps