AI Titans - The Quiz - Prove your Brains, Brawn, and Bytes!

SmartCards+ - Spaced Repetition Software for iOS. Modern, powerful and easy to use.

KardsAI - KardsAI - Instant Flashcards Mobile App. Instantly generate flashcards from any PDF, study note, text or via prompt on any topic. Learn offline effectively via spaced repetition.

FlipToMind - Space repetition app to help you remember everything

Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.

Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.