No cloud
Not one entry is sent to our servers. We don't have any.
for iPhone · no subscription
A cycle calendar that never leaves your phone
Log your period, keep a diary of how you feel, see what's coming. No account, no ads, no subscription: your entries stay in your iPhone's memory.
Coming to the App Store
See how it works
45 days free · then a one-time purchase
- dataStored on your device only
- accountNot needed: no email, no password
- adsNo banners, no trackers
- paymentOne purchase instead of a subscription
Calendar
One screen answers the question “when”
Period, forecast, fertile window and days with entries, all in one month. The forecast comes from your own cycle history, not from a textbook average.
- Period
- Predicted period
- Fertile window
- Ovulation day
- Diary entry
- Today
Logging your period takes one tap
The “Period started” button sits at the top of the day card, so the start and the end are marked without hunting through screens.
The forecast is yours to correct
Got the date wrong? Change the day in the calendar and the forecast recalculates straight away.
Fertility can be switched off
If you don't need it, the whole section disappears: from the calendar, the forecast and the notifications.
9:41
motuwethfrsasu
12345678910111213141516171819202122232425262728293031
Cycle day
12
Next period
in 17 days
Period started
Diary
Over 60 things to track: use only yours
Four sections per day: cycle, wellbeing, intimate health and lifestyle. Sections you don't need are hidden in settings and stop showing up.
Cycle
heavyspottingclotscreamycramps+ 40 more
Wellbeing
anxiousapathyunder 6 hhigh energyweight+ 25 more
Intimate health
protected sexlibidocontraceptionovulation test+ 15 more
Lifestyle
workoutsweet cravings3+ coffeesvitamins+ 15 more
Plus a free-text note. All of it lands in the database on your phone, and nowhere else.
9:41
CycleWellbeingIntimateLifestyle
Period
nonespottinglightmediumheavy
Pain
lower abdomenlower backhead
Mood
goodcalmirritableanxious
Sleep
under 6 h6–8 hover 8 h
Note — free text
Stats
Six months of cycles on one screen
Average cycle and period length, the list of past cycles, and the symptoms that keep coming back.
Calculated on the device
Nothing is processed on a server: the numbers come from your local database, even in airplane mode.
Something to show your doctor
Average lengths and cycle history open in seconds at an appointment. You can keep your doctor's contacts in the app too.
Free to keep reading
Calendar, history and stats stay available after the trial ends: your records are never held hostage.
9:41
Last 6 months
28Average cycle length
5Average period length
Frequent symptoms
- cramps5 times
- bloating4 times
- headache3 times
Reminders
Notifications that don't say too much
Period coming up, late cycle, fertile window, ovulation: switch on only what you want. And if other people see your lock screen, turn on hidden text.
- A heads-up 1–5 days ahead, or on the day itself
- A reminder to mark the end of your period
- An alert when the cycle is later than predicted
- You pick the time of day
- Everything is scheduled on the device: there are no push servers
Period coming up
in about 3 days
CycleNote
Check the app
Privacy
There is nothing here to leak
CycleNote has no server, no accounts and no analytics. Your entries live in a database on your iPhone and leave it only when you save a backup yourself.
PIN and Face ID
Lock the app with a code and biometrics, in case the phone ends up in someone else's hands.
Hidden text
The lock screen shows the app name and nothing about your cycle.
The backup is yours
A .cyclenote file saves wherever you want and restores on a new phone.
No analytics
We don't count app opens and we have no idea what you do inside.
Deletion is final
“Erase all data” wipes the database: we hold no copy that anyone could forget to delete.
Also in the app
The small things that make daily use work
-
Fast day entry
The day card opens with one tap straight from the calendar.
-
Flexible reminders
Four kinds of notification, each switched on separately.
-
PIN and Face ID
A lock on the app and cover from a glance over your shoulder.
-
Backups
Save the .cyclenote file to Files, iCloud Drive, or send it to yourself.
-
Hideable sections
Fertility and intimate health switch off when you don't want them.
-
Four languages
English, Russian, German and Dutch, switchable in settings.
-
My doctor
Clinic contacts and address, there when you suddenly need them.
-
Works offline
The internet is needed once, for the purchase. After that the app runs without it.
Purchase
Pay once, keep it for good
45 days free from first launch. After that, a single in-app purchase: no subscription, no renewals, no “cheaper for the first month”.
- Calendar, history and stats stay open after the trial
- Backup and restore always work
- Settings and data deletion are never limited
45 days free
One purchaseforever
- Unlimited entries and calendar
- Cycle notifications
- One payment — access forever
- No subscriptions, no ads
The purchase goes through the App Store and restores on other devices with the same Apple ID.
Questions
What people usually ask
Where do my entries go?
Nowhere. They stay in a database inside the app on your iPhone. CycleNote has no server, no account and no sync, so there is nowhere to send them.
What happens if I lose my phone?
Your entries go with it unless you have a backup. That's the flip side of keeping data on the device. Use “Settings → Data → Save a copy” to create a .cyclenote file and keep it in Files or iCloud Drive.
How do I move my data to a new iPhone?
Save a copy on the old phone, install CycleNote on the new one and choose “Restore from a file”. Every cycle and entry comes back.
Is this a subscription?
No. 45 days free, then a one-time purchase with lifetime access. Nothing renews and nothing is charged twice.
What stops working after the trial?
New diary entries and notifications. Calendar, history, stats, backups and data deletion stay free forever.
Is there an Android version?
Not yet. The app ships on iOS first; an Android version is planned.
Can I rely on the forecast?
The forecast is built from your own cycle history and is meant for planning — not for contraception and not for diagnosis. CycleNote is not a medical device; talk to a doctor about health questions.
How do I erase everything at once?
“Settings → Data → Erase all data”. The database is wiped from the device and cannot be recovered, unless you have a backup file.
Your cycle is your business
Install CycleNote, mark the first day of your last period, and the calendar starts working. Nothing else is asked of you: no email, no password, no consent form.
Coming to the App StoreiOS 15 and later · 4 languages · no account