First, you will need to import your .tax2016 file into TurboTax online from your computer. Once the return has been imported, you can log out of the online portal on your computer and log into to the app on your iPad to finish the return if you would like.
Please see these instructions for importing your return into TurboTax Online (select the option that says "If you used TurboTax CD/Download last year"): https://ttlc.intuit.com/replies/3301662
