yes since each year's return can only be done with that year's software and you need a full PC or MAC to install them on. there are also computer system requirements. Turbotax only offers the current and 3 prior years. earlier than that you need a pro or do the returns manually
prior year apps
https://turbotax.intuit.com/personal-taxes/past-years-products
IRS prior year forms
https://www.irs.gov/forms-pubs/prior-year
system requirements
https://turbotax.intuit.com/personal-taxes/cd-download/tta-system-requirements
WARNING: Years prior to 2018 are offered on the web. however, they cannot be updated. so you risk submitting an inaccurate return.
