SignalClock Lite vs OLED Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SignalClock Lite
This utility app displays a digital clock with a time signal function using local notifications. It offers multiple sound sets and font options. The free version has limitations on scheduling time signals to half-hour intervals.
- Local notification time signals
- Multiple sound sets
- iOS 10 font support
- Half-hour signal scheduling (free edition)
- Digital clock display
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Digital clock has time signal function based on Local Notification Center. It’s free edition of “SignalClock”. 5 different signal sound sets. All fonts iOS 10 supports are available in clock. 5 tone type are available in all sound file sets. Free edition limitations : - Able to schedule time signals on half hour unit ex. 00:00, 00:30, 01:00 ...
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!)
Screenshots
Verdict
The clearest difference is review sentiment: OLED Clock at 79% against SignalClock Lite's 0%. OLED Clock also leads on update cadence (every 4 weeks vs every 7 months). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
SignalClock Lite ships an update every 7 months, OLED Clock every 4 weeks. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.
| Parameter | SignalClock Lite | OLED Clock |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.9 (15 ratings) — better |
| Positive reviews | 0.0% of reviews | 78.6% of reviews — better |
| Number of ratings | — | 15 — better |
| Update frequency | Every 7 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple TV — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 28 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Masafumi Endoh | Christian Moeller |
Customer experience
SignalClock Lite
OLED Clock
In-app purchases
SignalClock Lite
No in-app purchases
OLED Clock
No in-app purchases
Questions
Is SignalClock Lite free?
Is OLED Clock free?
Do SignalClock Lite or OLED Clock have ads?
Which is updated more often, SignalClock Lite or OLED Clock?
Other comparisons
