Sleep diary
Your nights, finally clear.
Note your sleep in a few seconds, once the evening comes. Night after night, your habits take shape, and you arrive at your appointment with concrete reference points that are yours, ready to share.
FreeiOS and AndroidYour data stays yours
Nobody knows your nights better than you.
What is a sleep diary?
A sleep diary is a notebook where you record, each night, your bedtime and wake-up times, how long it took you to fall asleep, your awakenings and how you felt in the morning. Kept over a few weeks, it reveals your real rhythm and gives your doctor concrete reference points, instead of rough memories.
Your night, in a few taps
A gentle dial to set your times, then how you felt and your habits from the day before. Designed for tired evenings: it takes just a few seconds.
- Bedtime, falling asleep, awakenings, getting up
- What you consumed and did the day before
- Your own personalized items
- A reminder so you don't forget to log it (plus medication, appointments and bedtime)
Your times, night after night
Falling asleep, time in bed, awakenings: everything layers into a clear view that reveals your rhythm and your shifts over the weeks.
- View by day, week, month or your whole history
- Your sleep objective, tracked night after night
- A clear, instant read
Your objective, at your own pace
Set the bedtime and wake-up times that suit you. Somnologs then sends you regular reminders so nothing slips through.
- A sleep objective you choose yourself, bedtime and wake-up
- A reminder to fill in your diary, like a notebook that never forgets
- Your medication, your appointments and your bedtime
Your sleep at a glance
Efficiency, time awake, perceived quality, how rested you feel on waking. Readable curves that describe your nights as you actually lived them.
Medians and trends
Your reference points over the period: what holds steady, what changes, week after week.
Your data, exportable
A clean diary you export whenever you want, ready to hand to a doctor if needed.
Everything is ready for the appointment
A checklist guides you before the appointment: questionnaire, nights to complete, scales to fill in. When the day comes, you export a clean sleep diary, ready to share with your doctor.
- Countdown and missing nights flagged
- Pre-appointment checklist
- Clear PDF export, by email or printed
For patients
Take back control of your sleep. Track your nights, spot your trends and play an active part in your follow-up.
- Quick logging, even on tired evenings
- Clear, readable statistics
- PDF export for your healthcare professional
Are you a healthcare professional? Discover Somnologs for practitioners.
Your data is truly yours
Where many apps keep your data on their side, here everything stays on your phone. You export it, share it or erase it: you do what you want with it.
- Your nights stay on your device, not on our servers
- Export them whenever you want, in a clean, readable diary
- Ready to hand to a doctor, if and when you decide
- Nothing is sold on or used for advertising
What users say
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Honestly won over by this app that gets straight to the point. I just wanted to keep my sleep diary. It is just really well made, and you learn more about your sleep. Thank you to the developer.
Marie L. Google Play -
Delighted with this app that lets you write a nicely detailed sleep diary just by ticking boxes! The morning and evening notifications remind you to fill it in. Very pleasant to navigate, a nice change from paper that you forget to fill in half the time.
Alma B. App Store -
I never rate apps but this one is remarkably well made. I highly recommend it.
Thomas R. App Store
Genuine reviews published on the App Store and Google Play, first names changed to preserve anonymity.
Behind the app
Hi, I'm Adrien. The sleep diaries you forget to fill in by hand night after night, the polysomnography cables that get tangled up: I know the hassle. That is exactly why Somnologs exists, and why I'm keen to keep it accessible to everyone, for free.
I develop the app, I read every message, and I improve it with the people who use it. Got an idea, a question, or just want to say hello? Write to me, I'll be glad to reply!
Adrien, founder of Somnologs
Write to AdrienFrequently asked questions
Is Somnologs free?
Yes. The app is free on iOS and Android, with no advertising.
What exactly is a sleep diary?
It's a night-by-night record of your sleep: bedtime, wake time, awakenings, how rested you felt. Some people call it a sleep log or a sleep journal. Somnologs is the version on your phone, the one you fill in within seconds.
Where is my data stored?
On your phone. Your nights do not go to our servers. You export them, share them or erase them whenever you decide.
How long does it take to log a night?
About thirty seconds, even on tired evenings: your times, how you felt and your habits from the day before.
How do I send my nights to my doctor?
In one tap, you export a clean sleep diary as a PDF, to email, save or print for the appointment.
Does it replace a doctor?
No. Somnologs is a wellness app, not a medical device, and it makes no diagnosis. If your sleep difficulties persist, talk to a healthcare professional.
Which devices does it work on?
On iPhone and on Android, for free. You find your nights again on the device where you log them.
Looking for a sleep center?
Find a sleep center or clinic near you, anywhere in France. Search by postcode, or browse the full directory.