# StayGray vs Kairoscope

The clearest difference is iOS requirement: Kairoscope at 16.4 against StayGray's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. StayGray sells 3 in-app purchases, starting at $1.99 per month and Kairoscope sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

StayGray ships an update fortnightly, Kairoscope every 10 days. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | StayGray | Kairoscope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/staygray/id6757358852/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 68 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [MATTHIAS NEUWIRTH](https://appshunter.io/developer/1819953456) | [Yevhen Orestov](https://appshunter.io/developer/6789844536) |

## 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 |


### Kairoscope

[App page](https://appshunter.io/ios/app/kairoscope-day-planner/id6789844534)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Місяць | $2.99 | per month |
| Рік | $14.99 | per year |


## Frequently asked questions

### Is StayGray free?

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

### Is Kairoscope free?

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

### Do StayGray or Kairoscope have ads?

Neither StayGray nor Kairoscope shows ads.

### Which is updated more often, StayGray or Kairoscope?

StayGray ships an update fortnightly, and Kairoscope every 10 days. Most recently, StayGray was updated on October 24, 2026 and Kairoscope on October 12, 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.*