One Fact, One Source

Capture a fact worth remembering and the source where you found it.

7 days · about 3 min a day · free to start

Each day

Write one useful fact and its source title

Before you start

For account review, open Add proof for today’s check-in code. Include it in a readable handwritten or digital note. Keep private details outside the frame.

Your proof

Write one useful fact and its source title. For account review, the required note content and today’s full check-in code must be readable together. A camera photo or digital-note image works. Review checks visible content, not authorship, mastery or the truth of an event described.