There are Pros and Cons. Cons: generated passwords have less flexibility, not being able to add custom fields (ie backup codes or PIN), can’t store key files (unless you copy and paste contents into Notes section, which doesn’t redact it), no independent master vault password like 1Password.

Pros: it’s free and will probably be free forever, can store and generate TOTP codes, biometric unlock, very easily syncs between devices, great integration on macOS and iPhone/Pad, easy sharing of password to family members without them needing a subscription.

I have been a 1PW user for 10+ years but earlier this year started the long transition to save $10/month for the rest of my life which turns out to be a non-insignificant amount.