# 28X Private Period Tracker vs ChatMum

The clearest difference is in-app purchases: ChatMum at none against 28X Private Period Tracker's 1. 28X Private Period Tracker's advantage is update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 28X Private Period Tracker sells 1 one-off in-app purchase. ChatMum asks for nothing beyond the download.

28X Private Period Tracker ships an update weekly, ChatMum every 3 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 28X Private Period Tracker | ChatMum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/28x-private-period-tracker/id6747716043/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 100 MB | 13 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [28x](https://appshunter.io/developer/1822565803) | [Darren Hughes](https://appshunter.io/developer/1896540893) |

## What reviewers say

### 28X Private Period Tracker

[App page](https://appshunter.io/ios/app/28x-private-period-tracker/id6747716043)

Understand your menstrual cycle with a privacy-focused period tracker. Log moods, symptoms, and gain insights into your body's patterns from first periods to menopause. All your data stays on your device, with no ads or data selling.

**Highlights:** Period and cycle tracking, Menstrual phase predictions, Mood, energy, and symptom logging, Clinically informed women's health content, Data stored locally on device, No ads, subscriptions, or data selling

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NEON Butterfly | $1.99 | one-time |


### ChatMum

[App page](https://appshunter.io/ios/app/chatmum/id6768112116)

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

**In-app purchases:** none


## Frequently asked questions

### Is 28X Private Period Tracker free?

28X Private Period Tracker is free to download, with in-app purchases available.

### Is ChatMum free?

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

### Do 28X Private Period Tracker or ChatMum have ads?

Neither 28X Private Period Tracker nor ChatMum shows ads.

### Which is updated more often, 28X Private Period Tracker or ChatMum?

28X Private Period Tracker ships an update weekly, and ChatMum every 3 weeks. Most recently, 28X Private Period Tracker was updated on October 30, 2026 and ChatMum on October 25, 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.*