# Mayo vs ParamWatch

The clearest difference is in-app purchases: ParamWatch at none against Mayo's 4. ParamWatch also leads on iOS requirement (16.0 vs 18.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Mayo sells 4 in-app purchases, starting at $9.99 per month. ParamWatch asks for nothing beyond the download.

Mayo ships an update every 6 days, ParamWatch every 11 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Mayo | ParamWatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 11 days |
| Size | 74 MB | 1 MB |
| Requires iOS | 18.2 | **16.0** |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Mizu Health Ltd](https://appshunter.io/developer/960718835) | [Luca Ceci](https://appshunter.io/developer/923764949) |

## What reviewers say

### Mayo

[App page](https://appshunter.io/ios/app/mayo-mental-longevity/id6748619923)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $9.99 | per month |
| Pro Monthly | $19.99 | per month |
| Yearly Premium Subscription | $69.00 | per year |
| Pro Yearly - 40% Off | $139.99 | per year |


### ParamWatch

[App page](https://appshunter.io/ios/app/paramwatch/id6804263437)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Mayo free?

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

### Is ParamWatch free?

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

### Do Mayo or ParamWatch have ads?

Neither Mayo nor ParamWatch shows ads.

### Which is updated more often, Mayo or ParamWatch?

Mayo ships an update every 6 days, and ParamWatch every 11 days. Most recently, Mayo was updated on October 24, 2026 and ParamWatch on October 16, 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.*