# Big Red Clock vs OLED Clock

The clearest difference is rating: Big Red Clock at 4.5 against OLED Clock's 3.9. Big Red Clock also leads on ratings volume (101 vs 15). OLED Clock's advantage is in-app purchases (none vs 2) and update cadence (every 4 weeks vs every 2 months). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. Big Red Clock sells 2 in-app purchases, starting at $0.99 per month. OLED Clock asks for nothing beyond the download.

Big Red Clock holds the better App Store score, 4.5 against 3.9. That said, the two scores are not equally well evidenced: Big Red Clock has 101 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 83% of Big Red Clock's written reviews are positive against 79% of OLED Clock's.

Big Red Clock ships an update every 2 months, OLED Clock every 4 weeks. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Big Red Clock | OLED Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (101 ratings)](https://appshunter.io/ios/app/big-red-clock/id1056306447/reviews)** | [3.9 (15 ratings)](https://appshunter.io/ios/app/oled-clock/id1364541962/reviews) |
| Number of ratings | **101** | 15 |
| Positive reviews | **82.8% of reviews** | 78.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 12 MB | 10 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone, iPad, Mac, Apple TV | iPhone, iPad, iPod, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) | [Christian Moeller](https://appshunter.io/developer/1364541961) |

## What reviewers say

### Big Red Clock

[App page](https://appshunter.io/ios/app/big-red-clock/id1056306447)

This app provides a large, easily readable digital clock with both 12-hour and 24-hour formats. It also includes a countdown timer and a stopwatch function for various timekeeping needs.

**Highlights:** Large digital clock display, 12-hour and 24-hour formats, Countdown timer, Stopwatch functionality, Red color theme

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $5.99 | per year |


### 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 Big Red Clock free?

Big Red Clock is free to download, with in-app purchases available.

### Is OLED Clock free?

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

### Which has better reviews, Big Red Clock or OLED Clock?

Big Red Clock is rated higher. Big Red Clock averages 4.5 out of 5 from 101 ratings, while OLED Clock averages 3.9 from 15 ratings.

### Do Big Red Clock or OLED Clock have ads?

Neither Big Red Clock nor OLED Clock shows ads.

### Which is updated more often, Big Red Clock or OLED Clock?

Big Red Clock ships an update every 2 months, and OLED Clock every 4 weeks. Most recently, Big Red Clock was updated on September 23, 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.*