# SignalClock Lite vs Custom Digital Clock

The clearest difference is ads: SignalClock Lite at none against Custom Digital Clock's shown. SignalClock Lite also leads on monetization model (free vs ad-supported) and iOS requirement (12.0 vs 15.1). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

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, Custom Digital Clock every 9 months. The most recent releases landed on September 9, 2026 and July 10, 2026 respectively.

## The numbers

| Metric | SignalClock Lite | Custom Digital Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/custom-digital-clock/id6476612907/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 7 months** | Every 9 months |
| Monetization | **Free** | Ad-supported |
| Size | 28 MB | 29 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masafumi Endoh](https://appshunter.io/developer/757354996) | [tadashi endo](https://appshunter.io/developer/1605441215) |

## What reviewers say

### SignalClock Lite

[App page](https://appshunter.io/ios/app/signalclock-lite/id908918011)

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.

**Highlights:** Local notification time signals, Multiple sound sets, iOS 10 font support, Half-hour signal scheduling (free edition), Digital clock display

**Features:** macOS Compatibility

**In-app purchases:** none


### Custom Digital Clock

[App page](https://appshunter.io/ios/app/custom-digital-clock/id6476612907)

Display a stylish digital clock on your smartphone. Personalize the clock's appearance with custom coloring options to match your style.

**Highlights:** Stylish digital clock display, Customizable coloring, Smartphone integration, Personalized appearance

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SignalClock Lite free?

SignalClock Lite is free to download, with no in-app purchases.

### Is Custom Digital Clock free?

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

### Do SignalClock Lite or Custom Digital Clock have ads?

Custom Digital Clock shows ads; SignalClock Lite does not.

### Which is updated more often, SignalClock Lite or Custom Digital Clock?

SignalClock Lite ships an update every 7 months, and Custom Digital Clock every 9 months. Most recently, SignalClock Lite was updated on September 9, 2026 and Custom Digital Clock on July 10, 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.*