Owl, a Spaced Repetition App
Owl is built a spaced repetition app. We built it for ourselves mostly because we were unhappy with Anki from a UX perspective, and are now releasing it to everybody else. It is super tiny, but - we think - also pretty good. You can add your own decks manually, or generate them from a PDF (think academic papers, which is how I use that feature) or a prompt. There are no emails except study reminders (when there are cards to study). You can also use our "AI tutor" to review cards conversationally. Looking forward to your feedback!
Owl, a Spaced Repetition App launched on April 3, 2025 with 14 votes, #1,902 of 7,818 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Owl is a spaced repetition app designed for users dissatisfied with existing tools like Anki. Users can create study decks manually, generate them from PDFs such as academic papers, or create them via AI prompts. The app includes an AI tutor for conversational card review and sends only study reminder notifications. Built with a focus on user experience and a minimal interface, Owl is intended for students and learners who want a lightweight alternative for memorization and retention.
written from the facts on this page · September 2026
From the sources
Create your own flash card decks, or use AI to quickly generate study materials. Use owl to learn anything, anywhere, anytime. Photosynthesis is the biochemical process through which plants convert light energy into chemical energy. This process uses carbon dioxide and water to produce glucose and oxygen, forming the foundation of most food chains. The Pythagorean theorem states that in a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides (a² + b² = c²). This fundamental principle has applications across mathematics, physics, engineering, and architecture. Jane Austen wrote 'Pride and Prejudice', publishing it anonymously in 1813. The novel follows…from owl.cards
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