Not sure where you found a subscription to Anki, but it's free and open source: https://github.com/ankitects/anki https://github.com/ankitects/anki The iOS app

Not sure where you found a subscription to Anki, but it's free and open source: https://github.com/ankitects/anki https://github.com/ankitects/anki The iOS app is a one-time payment though. This article is definitely not written with an unfamiliar reader in mind though, that's for sure.