# StayGray vs Mutuo App

The clearest difference is in-app purchases: Mutuo App at none against StayGray's 3. Mutuo App also leads on update cadence (every 3 days vs fortnightly) and iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. StayGray sells 3 in-app purchases, starting at $1.99 per month. Mutuo App asks for nothing beyond the download.

StayGray ships an update fortnightly, Mutuo App every 3 days. Both last shipped on October 17, 2026.

## The numbers

| Metric | StayGray | Mutuo App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/staygray/id6757358852/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 49 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [MATTHIAS NEUWIRTH](https://appshunter.io/developer/1819953456) | [Monocolo](https://appshunter.io/developer/1879838011) |

## What reviewers say

### StayGray

[App page](https://appshunter.io/ios/app/staygray/id6757358852)

This app helps reduce screen time by automatically switching your device to grayscale. You can customize when color is allowed, set schedules, and track your progress in reducing usage.

**Highlights:** Automatic grayscale switching, Customizable color exceptions, Scheduled monochrome periods, Location-based color activation, Progress tracking for screen time, Color breaks for temporary color access

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| StayGray Plus | $8.99 | per year |
| StayGray Plus: Lifetime | $24.99 | one-time |


### Mutuo App

[App page](https://appshunter.io/ios/app/mutuo-app/id6760366928)

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

**In-app purchases:** none


## Frequently asked questions

### Is StayGray free?

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

### Is Mutuo App free?

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

### Do StayGray or Mutuo App have ads?

Neither StayGray nor Mutuo App shows ads.

### Which is updated more often, StayGray or Mutuo App?

StayGray ships an update fortnightly, and Mutuo App every 3 days. Most recently, StayGray was updated on October 17, 2026 and Mutuo App on October 17, 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.*