Datum
Open Datum
A journal that's actually yours.
Datum is an open, multimodal journal. Write freely, attach photos, video, audio and PDFs, and let your own history resurface. No subscription wall — free and open to everyone.
Datum is an open, multimodal journal. Write freely, attach photos, video, audio and PDFs, and let your own history resurface. No subscription wall — free and open to everyone.
A clean markdown editor built for thoughts, not formatting.
Attach anything to a moment. Your media, stored and yours.
Rediscover what you wrote on this date across every year.
Never stare at a blank page — thoughtful prompts, when you want them.
Bring your whole history over from a Day One JSON export.
Your journal, programmable. Build on top of your own data.