CertOwl alternatives

CertOwl is a proprietary app for iPhone. It offers a free version with paid upgrades. Developed by SunTzu.

Alternatives

• Anki
• Duolingo
• AnkiDroid
• RemNote
• Memrise
• Hivemind
• Particify
• Mochi
• Readwise
• Quizlet
• Ricotta Learning
• Mnemosyne