# OLED Clock vs Studio Clock GX2021

The clearest difference is rating: Studio Clock GX2021 at 4.5 against OLED Clock's 3.9. Studio Clock GX2021 also leads on update cadence (every 3 days vs every 4 weeks) and ratings volume (79 vs 15). OLED Clock's advantage is in-app purchases (none vs 9) and iOS requirement (12.0 vs 14.1). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Studio Clock GX2021 sells 9 one-off in-app purchases. OLED Clock asks for nothing beyond the download.

Studio Clock GX2021 holds the better App Store score, 4.5 against 3.9. That said, the two scores are not equally well evidenced: Studio Clock GX2021 has 79 ratings behind it against 15, so its average is the more settled of the two. Written reviews complicate that: 79% of OLED Clock's written reviews are positive against 73% of Studio Clock GX2021's, so the app with the better star average is not the one people write more warmly about.

OLED Clock ships an update every 4 weeks, Studio Clock GX2021 every 3 days. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | OLED Clock | Studio Clock GX2021 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (15 ratings)](https://appshunter.io/ios/app/oled-clock/id1364541962/reviews) | **[4.5 (79 ratings)](https://appshunter.io/ios/app/studio-clock-gx2021/id1584184143/reviews)** |
| Number of ratings | 15 | **79** |
| Positive reviews | **78.6% of reviews** | 73.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 3 MB |
| Requires iOS | **12.0** | 14.1 |
| Devices | iPhone, iPad, iPod, Apple TV | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Christian Moeller](https://appshunter.io/developer/1364541961) | [Trevor Kamhunga](https://appshunter.io/developer/1444171188) |

## What reviewers say

### 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


### Studio Clock GX2021

[App page](https://appshunter.io/ios/app/studio-clock-gx2021/id1584184143)

Transform your space into a professional studio with a highly accurate LED clock inspired by 1970s designs. Perfect for live shows, streams, and podcasts, it offers precise timing and customizable visual elements.

**Highlights:** 1/1000 second accuracy, Leap second support, 1970s LED design, Customizable colors, Quarter/half/hourly pips, Greenwich Time Signal (GTS)

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tangerine | $0.99 | one-time |
| Aqua | $0.99 | one-time |
| Plum | $0.99 | one-time |
| Banana | $0.99 | one-time |
| Strawberry | $0.99 | one-time |
| Bubblegum | $0.99 | one-time |
| Flora | $0.99 | one-time |
| Maraschino | $0.99 | one-time |
| Color Bundle | $2.99 | one-time |


## Frequently asked questions

### Is OLED Clock free?

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

### Is Studio Clock GX2021 free?

Studio Clock GX2021 is free to download, with in-app purchases available.

### Which has better reviews, OLED Clock or Studio Clock GX2021?

Studio Clock GX2021 is rated higher. OLED Clock averages 3.9 out of 5 from 15 ratings, while Studio Clock GX2021 averages 4.5 from 79 ratings.

### Do OLED Clock or Studio Clock GX2021 have ads?

Neither OLED Clock nor Studio Clock GX2021 shows ads.

### Which is updated more often, OLED Clock or Studio Clock GX2021?

OLED Clock ships an update every 4 weeks, and Studio Clock GX2021 every 3 days. Most recently, OLED Clock was updated on October 7, 2026 and Studio Clock GX2021 on October 13, 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.*