Subsurface-mobile is a full-fledged dive log application for Android, based on Subsurface, the best free open source dive log application available on Windows, Mac and Linux. Subsurface-mobile allows you to access your dive log on your tablet or phone, edit the data and even download new dive information from many Bluetooth dive computers (and even some dive computers that require a download cable - but there things get more complicated). Using a free Subsurface Cloud Storage account you can synchronize your dive data with the Subsurface desktop application (while significantly increasing the usefulness, the cloud account is not required to use Subsurface-mobile).
Now you can easily see your dive lists and details, quickly change those details, and in many cases even download the latest dives from your dive computer - all on a mobile device. Additionally, Subsurface-mobile lets you track GPS fixes during a dive trip and apply those to your dive list. You can also manually add new dives to a dive list.
Downloading from Bluetooth and Bluetooth LE dive computers should work for all supported models (see https://subsurface-divelog.org/documentation/supported-dive-computers). Downloading from cable based dive computers is much more limited. On some Android devices this doesn't work at all, on others at least dive computers with FTDI based cables are supported.
Please check out the Subsurface-mobile user manual: https://subsurface-divelog.org/documentation/subsurface-mobile-v2-user-manual
Please report any issues you may run into in our user forum: https://subsurface-divelog.org/user-forum/
Subsurface-mobile replaces the Subsurface companion app.
Subsurface-mobile is free and open source. No ads, no commercial anything. And it comes with free cloud storage (if you decide to use that - it's optional). Your data aren't used for anything, nothing gets monetized.