AxisFlow vs Cycle Sister
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
AxisFlow
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AxisFlow makes it easy to monitor cycles, predict upcoming dates, and understand personal wellness patterns in one simple experience. Track ovulation, fertility windows, moods, symptoms, and daily health insights with smart predictions tailored to your routine. Set helpful reminders, view monthly trends, and stay informed with a clean and private wellness companion designed for everyday use. Features: ⢠Smart cycle predictions ⢠Ovulation & fertility insights ⢠Mood and symptom monitoring ⢠Personalized reminders ⢠Wellness history and trends ⢠Secure and private experience AxisFlow helps you stay organized, informed, and connected with your body through simple and reliable health tracking. Terms of Use (EULA): https://appaxislab.com/periodtracker-policy#eula Privacy Policy: https://appaxislab.com/periodtracker-policy
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
Screenshots
Verdict
The clearest difference is ads: AxisFlow at none against Cycle Sister's shown. On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. AxisFlow sells 3 in-app purchases, starting at $3.99 per 7 days and Cycle Sister sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
AxisFlow ships an update monthly, Cycle Sister every 2 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.
| Parameter | AxisFlow | Cycle Sister |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly ā better | Every 2 months |
| Ads | No ā better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 ā better |
| Further details ā not scored | ||
| Size | 67 MB | 30 MB |
| Age rating | 17+ | 17+ |
| Developer | Ihsan Ahmad | CloudSpirit Limited |
In-app purchases
AxisFlow
- Premium Weekly$3.997 Days
- Premium Monthly$12.991 Month
- Premium Yearly$99.991 Year
Cycle Sister
- Monthly Premium$0.991 Month
- Yearly Premium$9.991 Year









