Ahhlife seems pretty capable except it doesn’t seem to handle photo attachments or logins only via gmail.

Any google mail works. I'm thinking maybe replacing the whole login system with email-only authentication like DailyDiary uses.

Sorry, typo - I meant to say email logins weren't possible which you picked up.

Email only authentication would presumably outlive any provider.

I bought into the MyOpenID SSO excitement once, it worked pretty well until it went away. After that, back to email accounts, identity providers like Google/MS/Twitter don't end to know everytime you're logging into your app.