OLED Clock vs Cloki
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!)
Cloki
Design custom clock widgets with a variety of personalization options. View calendar appointments as arcs and track different time zones or the moon phase directly on your home screen.
- Personalize clock appearance
- Display calendar appointments
- Set different time zones
- Show moon phase
- Create home screen widgets
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• Personalize – choose your own rims, hands, faces, markers and more • Day at a glance – see appointments on your calendar as arcs inside the rim • Time zone – create a clock widget and set it to a different time zone • Moon – connect with the moon and see it on the clock face as it appears in the sky
Screenshots
Verdict
The clearest difference is price: OLED Clock at Free against Cloki's $7.99. OLED Clock also leads on in-app purchases (none vs 2) and review sentiment (79% vs 63%). Cloki's advantage is rating (4.2 vs 3.9). On ratings volume, update cadence, ads and device support 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
OLED Clock is free to download; Cloki costs $7.99 up front. Cloki sells 2 one-off in-app purchases. OLED Clock asks for nothing beyond the download.
Cloki holds the better App Store score, 4.2 against 3.9. Both are backed by a comparable volume of ratings — 15 and 34 respectively. Written reviews complicate that: 79% of OLED Clock's written reviews are positive against 63% of Cloki'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, Cloki monthly. Both last shipped on October 7, 2026.
| Parameter | OLED Clock | Cloki |
|---|---|---|
| Price | Free — better | $7.99 |
| Rating | 3.9 (15 ratings) | 4.2 (34 ratings) — better |
| Positive reviews | 78.6% of reviews — better | 63.3% of reviews |
| Number of ratings | 15 | 34 — better |
| Update frequency | Every 4 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple TV | iPhone, iPad, iPod, Mac |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 10 MB | 242 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Moeller | Cascadian Watch Corp. |
Customer experience
OLED Clock
Cloki
In-app purchases
OLED Clock
No in-app purchases
Cloki
- Unlock All Cloki Features$3.99
- Unlock All Cloki Features$7.99









