Family sharing could be handled by a file sync app (i.e., dropbox or otherwise). Do note that this means dropbox also knows your finances unless you also encrypt somehow.
Budgeting is covered within the documentation. There's an example inside of budgeting.
There's a few mobile apps that have some 'support' for ledger (search "ledger" on the F-Droid [1] store to find two of them). There are also a couple web interfaces (general internet search) that could substitute for "mobile app" in some ways.
But as the data file is just text, any mobile text file editor would support "use" of the system for data entry.
One very nice part about the data file being just a text file is that it is also trivial to automate updates so that for recurring bills/income that are equal in value, you can automate the addition of those transactions with any form of job scheduler (i.e. cron on a Linux system).
Budgeting is covered within the documentation. There's an example inside of budgeting.
There's a few mobile apps that have some 'support' for ledger (search "ledger" on the F-Droid [1] store to find two of them). There are also a couple web interfaces (general internet search) that could substitute for "mobile app" in some ways.
But as the data file is just text, any mobile text file editor would support "use" of the system for data entry.
One very nice part about the data file being just a text file is that it is also trivial to automate updates so that for recurring bills/income that are equal in value, you can automate the addition of those transactions with any form of job scheduler (i.e. cron on a Linux system).
[1] https://f-droid.org/