# Rect Clock vs OLED Clock

The clearest difference is in-app purchases: OLED Clock at none against Rect Clock's 5. OLED Clock also leads on ads (none vs shown) and review sentiment (79% vs 59%). Rect Clock's advantage is ratings volume (168 vs 15). On price, rating and update cadence there is nothing between them.

Both are free to download. Rect Clock sells 5 one-off in-app purchases. OLED Clock asks for nothing beyond the download.

OLED Clock holds the better App Store score, 3.9 against 3.7. That said, the two scores are not equally well evidenced: Rect Clock has 168 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 59% of Rect Clock's written reviews are positive against 79% of OLED Clock's.

Rect Clock ships an update monthly, OLED Clock every 4 weeks. The most recent releases landed on September 26, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Rect Clock | OLED Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (168 ratings)](https://appshunter.io/ios/app/rect-clock/id398188215/reviews) | **[3.9 (15 ratings)](https://appshunter.io/ios/app/oled-clock/id1364541962/reviews)** |
| Number of ratings | **168** | 15 |
| Positive reviews | 58.7% of reviews | **78.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 178 MB | 10 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [y-design](https://appshunter.io/developer/398188218) | [Christian Moeller](https://appshunter.io/developer/1364541961) |

## What reviewers say

### Rect Clock

[App page](https://appshunter.io/ios/app/rect-clock/id398188215)

This app transforms your iPhone into a full-screen analog clock. Customize the clock face, index, and hands with various styles and colors. Enjoy a minimalist design with adjustable screen rotation and optional date display and auto-lock.

**Highlights:** Full-screen analog display, Customizable clock faces, Interchangeable index styles, Variety of hand designs, Adjustable hand movement, Screen rotation support, Configurable date and lock

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add All Faces | $0.99 | one-time |
| Add All Indexes | $0.99 | one-time |
| Add All Hands | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| Full Version | $2.99 | one-time |

**What reviewers like**

- ✨ Beautiful, elegant, minimalist design
- 👍 Easy to use and intuitive interface
- 🎨 Multiple customizable clock faces and styles
- 📱 Works well as a bedside/desk clock
- ⏱️ Accurate time display

**What reviewers complain about**

- 🐛 App doesn't stay on screen (goes to sleep with phone)
- 🐛 Blank white screen display issues on some devices
- 💸 Monetization model with ads and paywalls
- ❌ Cannot be set as lock screen or wallpaper
- ❌ Limited functionality compared to native clock

**Reported bugs**

- Blank white screen on launch (iPhone XR, iPad Air 2)
- App doesn't stay on when phone locks
- App crashes or won't open after purchase
- Settings screen appears on any touch
- Unresponsive UI elements on iPad

**Requested features**

- Alarm functionality
- Lock screen integration
- Live wallpaper capability
- Apple Watch compatibility
- Landscape/rotation support


### 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 Rect Clock free?

Rect 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, Rect Clock or OLED Clock?

OLED Clock is rated higher. Rect Clock averages 3.7 out of 5 from 168 ratings, while OLED Clock averages 3.9 from 15 ratings.

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

Rect Clock shows ads; OLED Clock does not.

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

Rect Clock ships an update monthly, and OLED Clock every 4 weeks. Most recently, Rect Clock was updated on September 26, 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.*