For improving my learning speed and not forgetting my study material, I built Minder. It's a flashcards app with a swipe to rate UI inspired by dating apps.
You create the front and back of flashcards using markdown. When practicing, my app uses an advanced spaced repetition and smart active recall algorithm to ensure that you review flashcards right before you may forget them. After reviewing a flashcard, you tap it to reveal the answer on the back of the card. You swipe right if you easily remembered it, left if you forgot it, or down if it took some effort and would like to review again. Minder's algorithm will show you harder cards first and more often to help you really optimize your memory and prevent you from forgetting your study materials.
Btw, it has no ads, no subscriptions, no third party analytics or other junk. It relies on a single IAP for lifetime access on iOS, iPad, and Mac. The IAP is currently priced very low as it's new.
If you'd like to try it:
https://apps.apple.com/us/app/minder-flashcards-exam-study/i...
Feel free to give me feedback!
Thanks!