# Custom Digital Clock vs TetraClock

The clearest difference is rating: TetraClock at 3.7 against Custom Digital Clock's 1.0. TetraClock also leads on update cadence (every 2 days vs every 9 months) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TetraClock holds the better App Store score, 3.7 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Custom Digital Clock ships an update every 9 months, TetraClock every 2 days. The most recent releases landed on October 2, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Custom Digital Clock | TetraClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/custom-digital-clock/id6476612907/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/tetraclock-falling-block/id6504890211/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Every 2 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 29 MB | 6 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [tadashi endo](https://appshunter.io/developer/1605441215) | [Legal Prompt Inc.](https://appshunter.io/developer/1490746932) |

## What reviewers say

### 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


### TetraClock

[App page](https://appshunter.io/ios/app/tetraclock-falling-block/id6504890211)

This clock app uses falling tetromino blocks to display the time. Customize colors, animations, and display formats. Note that the displayed time may have slight discrepancies due to animation effects.

**Highlights:** Tetromino block time display, Customizable colors and animations, 12/24-hour format, Seconds display toggle, Adjustable falling speed, Background color options

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Custom Digital Clock free?

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

### Is TetraClock free?

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

### Which has better reviews, Custom Digital Clock or TetraClock?

TetraClock is rated higher. Custom Digital Clock averages 1.0 out of 5 from 1 ratings, while TetraClock averages 3.7 from 3 ratings.

### Do Custom Digital Clock or TetraClock have ads?

Both Custom Digital Clock and TetraClock show ads.

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

Custom Digital Clock ships an update every 9 months, and TetraClock every 2 days. Most recently, Custom Digital Clock was updated on October 2, 2026 and TetraClock on October 22, 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.*