One fable a day.
A new idea, understood in minutes.

An iPhone app. Each day you draw one short fable; only at the end do you find out which idea it was about, such as a principle from physics, economics or psychology.

The free version gives you 1 fable a day. A subscription gives you 5 a day and lets you choose the field. Subscriptions are billed by Apple, renew automatically, and can be cancelled anytime in your iPhone settings.

Physics, economics, artificial intelligence, psychology, biology, mathematics, sociology, botany, medicine and astronomy.

You can share a fable as a link. Your friend sees the story with the answer hidden, and can claim the fable by installing the app before the link expires. In My Shares you only see how many people finished it or said "aha", never who they are.

No sign-up needed; you start right away. To back up your collection, sign in with Apple or Google in Settings › Backup & Sync; Delete Account is at the bottom of that screen. If you never signed in, email us at the address below and we will delete your data. See the Privacy Policy for details.

Fables and illustrations are generated by AI, and every one is reviewed by a person before it is published. They are for learning and fun, not medical, financial or other professional advice.