# Flyer Period Tracker vs Kotori Note

The clearest difference is update cadence: Kotori Note at every 6 days against Flyer Period Tracker's fortnightly. Flyer Period Tracker's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Flyer Period Tracker sells 3 in-app purchases, starting at $5.99 per 7 days and Kotori Note sells 2 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

Flyer Period Tracker ships an update fortnightly, Kotori Note every 6 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Flyer Period Tracker | Kotori Note |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (22 ratings)](https://appshunter.io/ios/app/flyer-period-tracker/id1556205664/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 201 MB | 80 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ofly Tech Co., Ltd.](https://appshunter.io/developer/1556021627) | [CHICOMARU STUDIO](https://appshunter.io/developer/1886602125) |

## What reviewers say

### Flyer Period Tracker

[App page](https://appshunter.io/ios/app/flyer-period-tracker/id1556205664)

Track your menstrual cycles, predict fertile and ovulation days, and monitor your health with personalized insights. Get professional tips and analyze your symptoms for better well-being. Includes heart rate monitoring and health tests.

**Highlights:** Period and ovulation prediction, Fertility planning, Heart rate monitoring, Health tests and analysis, Daily health tips, Symptom and mood tracking, Cycle trend monitoring

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flyer Premium | $5.99 | per 7 days |
| Flyer Premium | $19.99 | per month |
| Flyer Premium | $19.99 | per month |


### Kotori Note

[App page](https://appshunter.io/ios/app/kotori-note/id6760873383)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kotori Note | $0.49 | per month |
| Kotori Note | $5.99 | per year |


## Frequently asked questions

### Is Flyer Period Tracker free?

Flyer Period Tracker is free to download, with in-app purchases available.

### Is Kotori Note free?

Kotori Note is free to download, with in-app purchases available.

### Do Flyer Period Tracker or Kotori Note have ads?

Both Flyer Period Tracker and Kotori Note show ads.

### Which is updated more often, Flyer Period Tracker or Kotori Note?

Flyer Period Tracker ships an update fortnightly, and Kotori Note every 6 days. Most recently, Flyer Period Tracker was updated on November 3, 2026 and Kotori Note on November 5, 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.*