# NyxFlow - AI Menstrual Tracker — Cycle Tracking

> Cycle Tracking (iPhone/iPad app by Shenzhen Youmei Interactive Technology Co.,LtD.)

- Source: https://appshunter.io/ios/app/nyxflow-ai-menstrual-tracker/id6742981320 (this page in markdown: same URL + `.md`)
- Developer: [Shenzhen Youmei Interactive Technology Co.,LtD](https://appshunter.io/developer/1763198320)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 15.0 · 108 MB
- Languages: American English
- Released: 2025-06-24
- Data updated: 2026-08-20
- User reviews in markdown: https://appshunter.io/ios/app/nyxflow-ai-menstrual-tracker/id6742981320/reviews.md

## What is NyxFlow?

Track Your Cycle with Confidence!
Period Tracker Happy Day helps you effortlessly log your menstrual cycle, predict upcoming periods, and identify fertile windows. Designed for women who want to understand their bodies better—whether for pregnancy planning or natural contraception.

Key Features:
Smart Predictions: Automatically calculates your next period, ovulation days, and safe periods based on your data.
Fertility Insights: Clear charts and notifications for ovulation and high-risk pregnancy days.
Privacy First: Your data stays on your device—no cloud storage 

Privacy Policy: https://www.partneraichatbot.com/periodhappyrabbit/Privacy.html
Terms Of Use: https://www.partneraichatbot.com/periodhappyrabbit/TermsOfUse.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Yearly Member | $39.99 | per year |
| Weekly Member | $14.99 | per 7 days |
| Yearly Member | $29.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Life Membership | $49.99 | one-time |



## Version history (last 5 releases)

### 1.0.8 — 2025-08-28

- Fix Bug ! ! !

### 1.0.7 — 2025-08-28

- Fix Bug ! ! !

### 1.0.6 — 2025-08-25

- Fix Bug !!!

### 1.0.5 — 2025-08-13

- Fix Bug

### 1.0.4 — 2025-08-10

- Fix Bug

## Apps similar to NyxFlow

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Health Tracker- HeartRate & BP](https://appshunter.io/ios/app/health-tracker-heartrate-and-bp/id6739488599) | 4.4 (452) | Free | Health & Fitness |
| [SelfEmpower](https://appshunter.io/ios/app/selfempower/id6503187325) | — | Free | Health & Fitness |
| [Period Tracker－Pregnancy・Femin](https://appshunter.io/ios/app/period-trackerpregnancyfemin/id6739286665) | 4.7 (1,513) | Free | Health & Fitness |
| [VitalFit Care](https://appshunter.io/ios/app/vitalfit-care/id6745664895) | — | Free | Health & Fitness |
| [Belo: AI Pregnancy Tracker App](https://appshunter.io/ios/app/belo-ai-pregnancy-tracker-app/id6743734857) | 4.9 (49) | Free | Health & Fitness |
| [Pregnancy Test Scanner AI](https://appshunter.io/ios/app/pregnancy-test-scanner-ai/id6747716483) | 4.4 (117) | Free | Health & Fitness |

## More apps by Shenzhen Youmei Interactive Technology Co.,LtD

- [Phone Cleaner--Storage Clean](https://appshunter.io/ios/app/phone-cleaner-storage-clean/id6462658899)
- [AI edtior - IDphoto & Passport](https://appshunter.io/ios/app/ai-edtior-idphoto-and-passport/id6473510762)
- [CrushAl:Chat,AI Girlfriend](https://appshunter.io/ios/app/crushalchatai-girlfriend/id6717589116)

All apps by Shenzhen Youmei Interactive Technology Co.,LtD: https://appshunter.io/developer/1763198320

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*