In all the years since iPhone came out, no one has figured out the Spreadsheet and very few have tried. Using sheets on mobile works but is terrible.

Calendars, contacts, email, docs, messaging, group chat and all the other usual suspects have been tried but there are no fresh ideas on the mobile spreadsheet. 

The spreadsheet is the cornerstone of computing.

Working on iPhone spreadsheet is actually a huge mess takes so much time I tried using to regulate my drug medication one time last year it got
Messed up