# Peace Lab vs PMDD Journey

The clearest difference is update cadence: Peace Lab at fortnightly against PMDD Journey's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Peace Lab sells 2 in-app purchases, starting at $1.99 per month and PMDD Journey sells 5 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Peace Lab ships an update fortnightly, PMDD Journey every 3 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Peace Lab | PMDD Journey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/pmdd-journey/id6754612832/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 62 MB |
| Requires iOS | 14.0.0 | 14.0.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [嘉炜 丰](https://appshunter.io/developer/1759511819) | [Onrival LLC](https://appshunter.io/developer/1642060342) |

## What reviewers say

### Peace Lab

[App page](https://appshunter.io/ios/app/peace-lab/id6587551964)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $1.99 | per month |
| Unlimited access | $12.99 | per year |


### PMDD Journey

[App page](https://appshunter.io/ios/app/pmdd-journey/id6754612832)

This app helps users manage Premenstrual Dysphoric Disorder (PMDD) by tracking over 80 bio-markers, including emotional, cognitive, and physical symptoms. It uses AI to provide personalized insights, identify triggers, and generate clinical reports for healthcare providers.

**Highlights:** Comprehensive daily tracker (80+ bio-markers), AI-powered personalized insights, Integrated health tools (meds, care team, assessments), Symptom flare logging, Clinical reporting for doctors, Privacy-first data encryption

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per 7 days |
| Premium | $7.99 | per month |
| Premium | $29.99 | per year |
| Premium | $29.99 | per year |
| Premium | $39.99 | per year |


## Frequently asked questions

### Is Peace Lab free?

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

### Is PMDD Journey free?

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

### Do Peace Lab or PMDD Journey have ads?

Neither Peace Lab nor PMDD Journey shows ads.

### Which is updated more often, Peace Lab or PMDD Journey?

Peace Lab ships an update fortnightly, and PMDD Journey every 3 months. Most recently, Peace Lab was updated on October 27, 2026 and PMDD Journey on October 30, 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.*