Sleep Diary & Bedtime Tracker

Sleep Diary is a simple sleep journal that works fully offline. Log your bedtime, wake time, and how you slept in 30 seconds — including naps and split-sleep sessions.

HOW IT WORKS
- Tap +, set your bed and wake times, rate your night 1 to 5.
- Add nap or short-sleep sessions any time of day.
- Open the Calendar tab to see your weekly pattern.

FEATURES
- Multiple sessions per day (nights, naps, shift work)
- Backfill any past date — no midnight cutoff
- 7 and 30 day averages, bedtime and wake trends
- Sleep factor checklist (caffeine, alcohol, late meals, exercise, stress)
- Dark mode optimized for early mornings
- Morning reminder
- Works fully offline — your data stays on your device
- English and Korean

WHO IT IS FOR
- Anyone keeping a sleep diary before a doctor or therapist visit
- People practicing CBT-I sleep restriction at home
- Shift workers, parents, and anyone with split or napping schedules
- Users who prefer their sleep data to stay on their device

This app does not provide medical advice. Always consult a sleep specialist for diagnosis or treatment.