Sorry you can only use the Online web version on iPad and devices. Although there is a Mobile App that is a portal to the Online version. You need a full Windows or Mac computer to install the Desktop program.
Window System Requirements
Mac System Requirements
Online System Requirements
Thank you for the reply. Can I fill out two returns (separate people in my family, not joint) on the online version?
Yes, however, each person needs to have their own account set up to do so.
Online is only good for 1 return per account. But you can use the same email address for 5 accounts. How to start another return in the Online version
Or go to the IRS Free File programs
Free File: Do your Federal Taxes for Free | Internal Revenue Service
When you use Online TurboTax,
you get one return per fee.
Each return needs its own account and user ID. If you use the same account and user ID for a second return, you overwrite the first one and lose it forever.