OLED Clock vs SClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OLED Clock
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.
- OLED burn-in prevention
- Animated clock movement
- Color cycling
- Digital and analog views
- Customizable fonts and size
- Adjustable animation speed
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No burn-In! This clock is perfectly suited for the OLED display in iPhone X, because the clock won't stand still on the screen but moves around constantly using any available pixel of the screen over time. Also it smoothly changes color over the complete color spectrum, so that every sub pixel (red, green, blue) will be used evenly. This prevents the so called "burn-in effect" any OLED display shows, if certain pixels are switched on for a very long time. The clock not just works on iPhone X but on all iOS devices like iPhone, iPod Touch and iPad (iOS 9.3 and above). But there's more: - NEW: digital and analog representation of the clock. You choose! - choose between a huge number of nice looking fonts to display the actual time - adjust clocks size just by using the pinch gesture on main screen - use automatic color changes "color cycling" (recommended on iPhone x, can be switched off in settings) - adjust the clocks brightness by using scroll up and down gesture on the main screen - tap on the main screen to show tab bar at the bottom of the screen, here you will be able to switch between analog and digital view, call settings, help and about page - on settings page you can change font, color and animation speed as well as switch on/off seconds, blinking separators, 24h display, autosize and color cycling - all adjustments are permanent! OLED clock remembers them on the next time you use it! - use OLED clock in portrait or landscape mode. On digital mode, OLED clock remembers your preferred font size depending on device orientation - help page provides necessary information about usage - fully localized in english, german, hebrew, french and japanese (new!)
SClock
This app offers a customizable clock with adjustable display sizes and color options. It features dual timers with customizable sounds and visual cues, perfect for time management tasks like Pomodoro.
- Adjustable display size
- Color selectable clock face
- Dual timer functionality
- Customizable countdown sounds
- Color-coded time display
- Simple, easy-to-read design
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・ 24H / 12H calendar Simple clock function with color selectable ・The sound before the start, the countdown sound, the color display can be changed according to the remaining time, and the two timers can be switched, making it ideal for pomodoro timers, etc.The sound before the start, the countdown sound, the color display can be changed according to the remaining time, and the two timers can be switched, making it ideal for pomodoro timers, etc. ・By switching between large format and middle size display, it is easy to use at hand and has excellent visibility from a distance in a wide place. ・Simple and easy-to-read design. You can use it in any situation such as studying, meetings, presentations, sports, fitness, cooking, etc.
Screenshots
Verdict
The clearest difference is in-app purchases: OLED Clock at none against SClock's 1. OLED Clock also leads on ads (none vs shown) and review sentiment (79% vs 50%). SClock's advantage is rating (4.3 vs 3.9). On price, ratings volume and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SClock sells 1 in-app purchase, starting at $0.99 per month. OLED Clock asks for nothing beyond the download.
SClock holds the better App Store score, 4.3 against 3.9. Both are backed by a comparable volume of ratings — 15 and 24 respectively. Written reviews complicate that: 79% of OLED Clock's written reviews are positive against 50% of SClock'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, SClock fortnightly. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.
| Parameter | OLED Clock | SClock |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (15 ratings) | 4.3 (24 ratings) — better |
| Positive reviews | 78.6% of reviews — better | 50.0% of reviews |
| Number of ratings | 15 | 24 — better |
| Update frequency | Every 4 weeks | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple TV — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.1 |
| Further details — not scored | ||
| Size | 10 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Moeller | Hajime Suzuki |
Customer experience
OLED Clock
SClock
In-app purchases
OLED Clock
No in-app purchases
SClock
- premium$0.991 Month
Questions
Is OLED Clock free?
Is SClock free?
Which has better reviews, OLED Clock or SClock?
Do OLED Clock or SClock have ads?
Which is updated more often, OLED Clock or SClock?
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