# ProAct vs Moss

The clearest difference is in-app purchases: Moss at none against ProAct's 2. Moss also leads on ads (none vs shown) and device support (3 vs 1). ProAct's advantage is update cadence (every 5 days vs monthly). On price and iOS requirement there is nothing between them.

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

ProAct ships an update every 5 days, Moss monthly. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | ProAct | Moss |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/proact-migraine-tracker/id6756326206/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 69 MB | 18 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Coleton Gorecke](https://appshunter.io/developer/1717349326) | [Quiet Leaf LLC](https://appshunter.io/developer/6777428492) |

## What reviewers say

### ProAct

[App page](https://appshunter.io/ios/app/proact-migraine-tracker/id6756326206)

This app uses biometric data and machine learning to predict migraine attacks up to 48 hours in advance. It tracks symptoms, identifies triggers, and offers personalized relief methods. Data is kept private and secure on your device.

**Highlights:** Migraine attack prediction up to 48 hours in advance, Biometric analysis (HRV, sleep, resting heart rate), Comprehensive attack tracking (intensity, duration, symptoms, triggers), AI-powered pattern discovery for personalized insights, Personalized relief protocols and trigger identification, Privacy-first design with on-device data storage, HealthKit integration

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProAct Premium | $9.99 | per month |
| ProAct Premium | $89.99 | per year |


### Moss

[App page](https://appshunter.io/ios/app/moss-meditation-timer/id6777428490)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ProAct free?

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

### Is Moss free?

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

### Do ProAct or Moss have ads?

ProAct shows ads; Moss does not.

### Which is updated more often, ProAct or Moss?

ProAct ships an update every 5 days, and Moss monthly. Most recently, ProAct was updated on October 13, 2026 and Moss on October 6, 2026.

---

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