Anki is an awesome tool to learn stuff by heart!
- Anki is a free app (also for iOs computer but not iOs phone as far as I know) that does teaching with decks and cards
- It supports reading text, writing, pictures and audio
- You can create easily your own cards or download existing decks that others have made
- With addons, you can tailor Anki even further down to your preferences (looks, functions, card types etc)
- It gives you data relating to your learning activities (time taken vs amounts of cards, how well you remember stuff, types of cards
- If you register over Ankiweb, you can sync between devices
I just picked up a link that takes you to shared decks of finnish language: https://ankiweb.net/shared/decks?search=finnish
Anki website: https://apps.ankiweb.net/
I have used this tool on many different topics. It helped me through one test at school years ago. Now I use it for general/random topics of all sorts that seem interesting to me.
I opened the first Google link I found about f-droid and anki (https://f-droid.org/packages/com.ichi2.anki/). The app doesn't have the same app image as the Anki I talk about (there are other versions done by someone else)so I don't know, is this the same app. I did a search in that website for Anki but I didn't find an equivalent for it in there.
Oh! Login at ankiweb.net? I didn't know about that limitation. I have an account so I missed that. Well - if going after already-existing data is not your thing because of that limitation going on, I'd still suggest to give the app itself a try ๐ (creating your own cards/decks)