# B vs Cyra PCOS

The clearest difference is in-app purchases: B at none against Cyra PCOS's 2. Cyra PCOS's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Cyra PCOS sells 2 in-app purchases, starting at $9.99 per month. B asks for nothing beyond the download.

B ships an update every 9 days, Cyra PCOS every 5 days. The most recent releases landed on November 9, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | B | Cyra PCOS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 86 MB | 12 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [YunKi Hwang](https://appshunter.io/developer/1772885670) | [JIYULMOM](https://appshunter.io/developer/379186743) |

## What reviewers say

### B

[App page](https://appshunter.io/ios/app/b-day/id6756418053)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Cyra PCOS

[App page](https://appshunter.io/ios/app/cyra-pcos-cycle-tracker/id6763020313)

This app helps manage PCOS by tracking irregular cycles and symptoms. It uses AI to analyze your unique patterns in diet, sleep, and exercise, providing insights and forecasts. Premium features include AI chat and doctor-ready reports.

**Highlights:** Daily log for symptoms, cycle, meals, sleep, exercise, medication, AI pattern analysis for irregular cycles, Insulin resistance signal tracking, Irregular cycle forecasting, AI chat powered by Claude (Premium), Insights dashboard with PDF export

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cyra Premium Monthly | $9.99 | per month |
| Cyra Premium Annual | $79.99 | per year |


## Frequently asked questions

### Is B free?

B is free to download, with no in-app purchases.

### Is Cyra PCOS free?

Cyra PCOS is free to download, with in-app purchases available.

### Do B or Cyra PCOS have ads?

Neither B nor Cyra PCOS shows ads.

### Which is updated more often, B or Cyra PCOS?

B ships an update every 9 days, and Cyra PCOS every 5 days. Most recently, B was updated on November 9, 2026 and Cyra PCOS on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*