I've been using this for a few weeks and find its a great way to memorize test answers and questions. Not really great for study, but excellent for practice testing.
Android - https://play.google.com/store/apps/details?id=com.iversoft.htp
Apple - https://apps.apple.com/us/app/ham-test-prep-free-technician/id303413588 (free)
There are other apps you can use for sure as well.
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