Some system level access/metrics is restricted in iOS. Accubattery for battery measurement is not available in iOS. Not sure about the accuracy of iOS alternatives to Accubattery.

I use KeepassXC on my laptop (completely offline), export the encrypted backup copy and store the backup offline copy and in cloud. Also, I manually import the backup file into my Keepass2AndroidOffline android app (it’s a hassle, but I’m okay with it)

But for normies (non-technical folks), the benefits and convenience of using a cloud-based password manager is far outweighed by any security vulnerabilities in such password managers.

Also, Bitwarden’s source code is open-source (unlike other closed-source password managers), so I trust it more.