Not sure why Google doesn't offer Keep for iOS but they don't. TurboNotes lets me share notes, shopping lists, etc. with my husband on our shared gmail account...for free! Thanks, TurboNotes! The app is easy to use/intuitive, and well designed (I haven't run into any bugs yet). I do wish there were themes to change background color and such. If this feature exists in the free version, I haven't found it yet.