I sadly haven't tracked precise battery usage for both Signal and Molly, to properly compare. I do believe it easily saves me 10 percent on my daily battery life, though.
Did you see the Documentation section in the README.md? You basically initialise a password store on your server, and you use an implementation like this to sync (SSH + git) your passwords, which are encrypted via your GPG key.
I sadly haven't tracked precise battery usage for both Signal and Molly, to properly compare. I do believe it easily saves me 10 percent on my daily battery life, though.
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