Red Diary
Red Diary tells you what to do today — not just what day you're on. No account, no cloud, no analytics. Everything stays on your iPhone.
Today
More than a calendar
Every screen answers one question — what should I do today — and adapts as your body does.
Guidance for energy, workouts, and symptoms — tuned to your current phase.
Cycle tracking, pregnancy, trying to conceive, and avoiding — each with its own intelligence.
Training and recovery suggestions that move with your cycle, not against it.
Privacy is non-negotiable
Red Diary was built on one rule: your reproductive health data belongs to you and no one else.
Open the app and start. No email, no sign-up, ever.
Everything is stored locally, in encrypted storage on your device.
Zero tracking. No ad SDKs. No third-party data sharing.
Reads steps, sleep, and activity. Never writes to or shares your Health data.
Inside the app
