# 28X Private Period Tracker vs PeriShift

The clearest difference is update cadence: PeriShift at daily against 28X Private Period Tracker's weekly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 28X Private Period Tracker sells 1 one-off in-app purchase and PeriShift sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

28X Private Period Tracker ships an update weekly, PeriShift daily. The most recent releases landed on October 28, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 28X Private Period Tracker | PeriShift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/28x-private-period-tracker/id6747716043/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Free | — |
| Size | 100 MB | 41 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [28x](https://appshunter.io/developer/1822565803) | [Book Weaver Publishing, LLC](https://appshunter.io/developer/6794695266) |

## 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 |


### PeriShift

[App page](https://appshunter.io/ios/app/perishift/id6794695264)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PeriShift Monthly | $4.99 | per month |
| PeriShift Annual | $29.99 | per year |


## Frequently asked questions

### Is 28X Private Period Tracker free?

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

### Is PeriShift free?

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

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

Neither 28X Private Period Tracker nor PeriShift shows ads.

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

28X Private Period Tracker ships an update weekly, and PeriShift daily. Most recently, 28X Private Period Tracker was updated on October 28, 2026 and PeriShift on October 14, 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.*