Cycle Sister vs OvaFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cycle Sister
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Cycle Sister is a private, local-first period and fertility tracker. Log your period cycles, track predictions for next cycle, fertile window, ovulation day, and safe windows. All data is kept 100% secure and stored locally on your device. Key features include: • Period start and length logging • Predictions for next periods and ovulation days • Color-differentiated safe/ovulation/predicted periods • Multi-profile support for recording multiple people (Pro features) • Local backup and restore with strong password encryption Privacy Policy: https://sites.google.com/view/cycle-care-app/privacy Terms of Use: https://sites.google.com/view/cycle-care-app/terms
OvaFlow
This app helps users understand their menstrual cycle and reproductive health. It offers features for tracking periods, logging daily symptoms, and provides educational resources on topics like PCOS. The app aims to offer an organized and informative experience for managing personal health data.
- Educational PCOS Indicator
- Cycle Tracking Calendar
- Daily Symptom Logging
- Personalized Dashboard
- Apple Health Integration
- Medication Reminders
- Offline Mode
- Privacy Focused
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OvaFlow Understand your cycle. Track your health. Stay informed. OvaFlow is a menstrual cycle and symptom tracking app designed to help you better understand your reproductive health. Whether you're tracking your period, monitoring daily symptoms, or learning more about Polycystic Ovary Syndrome (PCOS), OvaFlow provides an organized, easy-to-use experience that puts your health information in one place. Features • Educational PCOS Indicator Complete a guided assessment that analyzes your self-reported symptoms and provides an educational indicator score designed to help you better understand symptom patterns commonly associated with PCOS. • Cycle Tracking Track period dates, cycle length, flow intensity, and view your menstrual history in an intuitive calendar. • Daily Symptom Logging Record symptoms including mood, energy, pain, cervical mucus, acne, and other health changes to identify trends over time. • Personalized Dashboard View your cycle information, recent symptom activity, educational indicator, reminders, and health insights from one central dashboard. • Apple Health / HealthKit Integration OvaFlow integrates with Apple Health using HealthKit. With your permission, OvaFlow can read supported menstrual-flow information from Apple Health to import existing cycle history. Apple Health access occurs only after you grant permission and initiate an import. OvaFlow does not write menstrual information to Apple Health. • Medication Reminders Create personalized medication reminders to help support your daily routine. • Health Education Access educational resources about menstrual health, hormones, ovulation, and PCOS to better understand your body. • Works Offline Continue logging symptoms and cycle information even without an internet connection. Your data automatically synchronizes when you're back online. • Privacy First Your personal health information is securely stored and protected. Authentication is available through Sign in with Apple, Google Sign In, or email. Important Information OvaFlow is designed for educational and informational purposes only. The Educational PCOS Indicator is based on self-reported information and is not a clinically validated probability, medical diagnosis, or substitute for professional medical advice. Always consult a qualified healthcare professional regarding any medical questions or health concerns.
Screenshots
Verdict
The clearest difference is in-app purchases: OvaFlow at none against Cycle Sister's 2. OvaFlow also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Cycle Sister sells 2 in-app purchases, starting at $0.99 per month. OvaFlow asks for nothing beyond the download.
| Parameter | Cycle Sister | OvaFlow |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (7 ratings) — better |
| Number of ratings | — | 7 — better |
| Update frequency | Every 2 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 30 MB | 6 MB |
| Age rating | 17+ | 17+ |
| Developer | CloudSpirit Limited | Manish Gakhar |
In-app purchases
Cycle Sister
- Monthly Premium$0.991 Month
- Yearly Premium$9.991 Year
OvaFlow
No in-app purchases









