I would recommend one but I have always been wery about sending password data through the internet to be stored on some companies server. So I put in the effort to host my own Vaultwarden docker instance through TrueNas scale (True charts) on my home server and access it via a VPN tunnel (Wireguard). It’s very complicated to setup compared to a web service but this way I own all of my password data locally. The android app (Bitwarden) works alright but sometimes it has trouble understanding what is a login screen and you have to force fill things. Vaultwarden as a docker instance works great. The only time this setup needs to be on VPN is to save a new password. Using existing passwords seem to be cached on my device.

I’ve been using Synching to nightly backup my cellphone pictures for about 4 years now and it is still working just fine. I have a folder that gets pulled to my phones with edited photos and the phone cam foler gets pushed. Worst thing about it is android sometimes stops allowing the client to run if you haven’t opened it in awhile.