App is available to download at following stores:
Warning: All three versions (Google Play, F-Droid and the APKs) are not compatible (not signed by the same key)! You must uninstall one to install the other, which will delete all your data.
Ultrasonic source code releases can be downloaded from GitLab.
This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See the GNU General Public License for more details.