Kept my period info organized
Easy to use and the dates and timeline is really clear.
Free
In-App Purchases
About
This app prioritizes user privacy by keeping all health data on the device, offering no account or cloud storage. It provides comprehensive cycle tracking, fertility insights, and a health journal, with educational articles available.
✓On-device data storage
✓Cycle and fertility tracking
✓Symptom and mood logging
✓Health journal
✓Evidence-based health articles
✓Face ID/Touch ID protection
✓Multiple language support
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What's New in Cylla
1.6.0
July 20, 2026
NEW IN 1.6 • Home Screen & Lock Screen widgets — your cycle day and phase at a glance • Smarter reminders: fertile window, ovulation day, and gentle cycle check-ins • Cycle recap — see a summary of your cycle when a new one begins • Today's Read — a daily health article matched to your cycle phase • Log your flow on any day of your period, not just the first • Better predictions — see when your period is running late, and the calendar now shows every upcoming cycle • Cycle history and averages in Insights • Export your data anytime from Settings • Bug fixes for cycle tracking and notification reliability
MoreSubscription plans
Pro Monthly
Full Pro access: trends, insights & 88 articles
$3.991 Month
2
In-App Purchases
$9.99
Pro Lifetime
All Pro features forever - one-time payment
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FAQ
What makes Cylla private?
Cylla is designed for privacy by keeping all your health data on your device. It does not require an account, use cloud storage, or track you. Your data remains on your phone and is protected by Face ID or Touch ID.
Does Cylla have ads?
No, Cylla is completely ad-free. The developer explicitly states 'No ads. No data selling. No "anonymous" analytics. Nothing.'
What health information can I track with Cylla?
You can log your period, flow intensity, symptoms, and mood daily. It also tracks fertility levels, fertile windows, cervical mucus, basal body temperature (BBT), and LH tests.
How much does Cylla Pro cost?
Cylla Pro offers a monthly plan for $3.99 or a lifetime purchase for $9.99. The Pro version unlocks all 88 health articles and advanced insights like mood trends and symptom pattern analysis.
What devices does Cylla support?
Cylla is available for iPhone and iPad. It is designed for iOS devices.
How often is Cylla updated?
The latest version, 1.1, was released on April 30, 2026, indicating regular updates. The app was initially released on April 24, 2026.
Can I cancel my Cylla Pro subscription?
Yes, your monthly Cylla Pro subscription auto-renews unless cancelled at least 24 hours before the end of the current period. You can manage your subscription through your Apple ID account settings.
What age rating does Cylla have?
Cylla has an age rating of 12+. This suggests it is suitable for users aged 12 and older.