# Earth Clock vs OLED Clock

The clearest difference is update cadence: OLED Clock at every 4 weeks against Earth Clock's every 3 months. OLED Clock also leads on iOS requirement (12.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Earth Clock ships an update every 3 months, OLED Clock every 4 weeks. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Earth Clock | OLED Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (15 ratings)](https://appshunter.io/ios/app/oled-clock/id1364541962/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 78.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Monetization | — | Free |
| Size | 5 MB | 10 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone, iPad, Apple TV, Vision Pro | iPhone, iPad, iPod, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Kazuhisa Asakawa](https://appshunter.io/developer/927996843) | [Christian Moeller](https://appshunter.io/developer/1364541961) |

## What reviewers say

### Earth Clock

[App page](https://appshunter.io/ios/app/earth-clock/id975016856)

**Features:** macOS Compatibility

**In-app purchases:** none


### OLED Clock

[App page](https://appshunter.io/ios/app/oled-clock/id1364541962)

This app displays a dynamic clock designed to prevent OLED screen burn-in by constantly moving and changing colors. It offers customizable digital and analog views with various fonts, sizes, and animation speeds.

**Highlights:** OLED burn-in prevention, Animated clock movement, Color cycling, Digital and analog views, Customizable fonts and size, Adjustable animation speed

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

**In-app purchases:** none


## Frequently asked questions

### Is Earth Clock free?

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

### Is OLED Clock free?

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

### Do Earth Clock or OLED Clock have ads?

Neither Earth Clock nor OLED Clock shows ads.

### Which is updated more often, Earth Clock or OLED Clock?

Earth Clock ships an update every 3 months, and OLED Clock every 4 weeks. Most recently, Earth Clock was updated on September 9, 2026 and OLED Clock on September 20, 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.*