Your cycle, only on your phone.
Tidelle is a period and cycle tracker with no account, no cloud and no ads. It learns from your own cycles, reminds you when it matters, and keeps every entry on your phone.
Free to use. Pro is a small one-time unlock, never a subscription.
Going by your own past cycles.
Private by design, not by promise
Most cycle apps keep your most personal data on their servers. Tidelle has no servers. The Android app doesn’t even have permission to use the internet.
No account
Nothing to sign up for, no email, no password. Open the app and start.
No cloud
What you log stays on your phone, kept out of cloud and phone-to-phone backups — unless you choose a backup folder yourself.
No ads, no tracking
No analytics, no ad networks, no data sold or shared. There’s nothing to sell.
Everything you need, nothing you don’t
Built for real cycles — regular, irregular, changing.
Predictions that learn
Your next period and fertile window, estimated from your own cycles — with an honest range, wider when your cycles vary.
Reminders that fit
Your period, the pill (21+7, 24+4, every day or custom), the ring, the patch or the injection, a daily log nudge, a monthly breast self-exam.
A report for your doctor
A clear PDF of your cycles, period length and top symptoms. Plus gentle notes on patterns doctors usually ask about.
Perimenopause & after birth
Goals that change how Tidelle reads your cycle: no “late” alarms in perimenopause, and a fresh start from your baby’s birth date.
Bring your history
Import from Clue, Flo or any CSV. Export a backup or a CSV whenever you like — your data is yours.
Calm extras
Home-screen widgets, an app lock with your face or fingerprint, themes, and sleep sounds to fall asleep to.
Free does a lot. Pro goes deeper.
Everything that matters day to day is free, for good. Pro is one small payment that unlocks it for good — never a subscription.
| Feature | Free | Pro |
|---|---|---|
| Predictions and fertile window | ✓ | ✓ |
| Calendar, notes and every symptom | ✓ | ✓ |
| Period, pill, ring, patch and injection reminders | ✓ | ✓ |
| A report for your doctor | ✓ | ✓ |
| Import, backups and CSV | ✓ | ✓ |
| Symptom patterns and a heads-up before they start | — | ✓ |
| Temperature chart | — | ✓ |
| Perimenopause trends | — | ✓ |
| Fertile-window reminder | — | ✓ |
| More themes and Follow my cycle | — | ✓ |
| Three more sleep sounds | — | ✓ |
Pregnant? Plippo Baby takes it from here
When a test comes back positive, switch your goal in Tidelle to “Track my pregnancy”. Period predictions and reminders pause, and Tidelle points you to Plippo Baby: your pregnancy week by week, then your baby’s days up to their third birthday.
Same maker, same rules: no account, no ads, your data on your phone. Your Tidelle history stays where it is — switch the goal back any time.
Questions
Where is my data stored?
Only on your phone, inside Tidelle. It’s left out of cloud and device-transfer backups on purpose. To move to a new phone, switch on automatic backup (to a folder you choose) or save a backup file yourself, then restore it on the new phone.
Can Tidelle be used as birth control?
No. Tidelle’s predictions are estimates from past cycles. It is not a contraceptive method and not medical advice.
I’m switching from another app. Can I keep my history?
Yes — import an export from Clue, Flo or any CSV with dates. Days you already logged in Tidelle stay as they are.
Which languages?
English, German, French, Spanish, Italian, Portuguese (Brazil), Dutch, Polish, Turkish, Indonesian, Arabic, Hindi, Japanese and Chinese (Simplified). The app and this site follow your phone’s or browser’s language.
Track your cycle, keep your privacy.
Android first, iPhone right after.