NerdCycle
Track your cycle, together
Free · In‑App Purchases
The cycle tracker built for two. Share insights with your partner, track period and fertility, log daily check-ins. Privacy-first. Try free for 7 days.
NerdCycle is the cycle tracker designed for two — track your period, fertility, and daily wellness, and share it with your partner. No accounts. No data collection. Everything stays on your iPhone and your private iCloud.
WHY NERDCYCLE
• Built for couples — share your cycle data with your partner so they can see what phase you're in and how to be supportive
• Privacy first — no analytics, no third-party tracking, no servers in the loop
• Beautiful pixel-perfect design with light and dark modes
• 7-day free trial. Yearly subscription or one-time lifetime purchase
CYCLE TRACKING
• Period predictions with confidence indicators
• Fertile window and ovulation forecasting
• Phase-aware insights for menstrual, follicular, ovulation, and luteal phases
• Cycle regularity score and prediction accuracy stats
• Daily tips tailored to your current phase
DAILY LOG
• Mood, flow, energy, sleep, symptoms
• Custom symptoms — add your own
• Water intake, exercise, basal body temperature (BBT)
• Cervical mucus (when you're trying to conceive)
• Quick notes for every day
PARTNER MODE
• Invite your partner with a private iCloud share — just send one link
• They see your phase, alert level, and partner-specific guidance
• Conversation tips, support kit, and "do today" suggestions tailored to her phase
• Stop sharing anytime in Settings
INSIGHTS & CHARTS
• Cycle length history and trend
• Mood and sleep correlations
• Top symptoms by phase
• Energy and sex drive patterns
• BBT chart with ovulation shift detection
• Monthly summary reports
APPLE INTEGRATIONS
• Apple Health: optional read/write for menstrual flow and BBT
• Home screen widgets for quick cycle check
• Apple Watch complications
• Live Activity on Lock Screen and Dynamic Island
• Notifications for upcoming period, fertile window, and partner phase changes
EXPORT YOUR DATA
• CSV export for your records
• PDF doctor report for clinic visits
• Delete everything anytime in Settings
PRICING
NerdCycle is free to download with a 7-day free trial. After the trial, choose one of two options:
• Yearly Subscription — $9.99 per year, auto-renewable
• Lifetime — $29.99 one-time purchase
Subscriptions auto-renew unless cancelled at least 24 hours before the period ends. Manage or cancel in iOS Settings → Apple ID → Subscriptions.
Privacy Policy: https://vladoivankovic.com/NerdCycle/privacy.php
Terms of Use: https://vladoivankovic.com/NerdCycle/terms.php
NerdCycle is not a medical device. Predictions are estimates — always consult a healthcare professional for medical decisions.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, VLADO IVANKOVIC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- VLADO IVANKOVIC
- Size
- 18.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 8 more
- English, Croatian, Dutch, French, German, Italian, Polish, Portuguese, Spanish
- Age Rating
13+
- 13+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- NerdCycle Lifetime $29.99
- NerdCycle Premium $9.99
- Copyright
- © 2026 Vlado Ivankovic
