# TetraClock vs Retrotick

The clearest difference is in-app purchases: TetraClock at none against Retrotick's 7. TetraClock also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (14.0 vs 26.0). Retrotick's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Retrotick sells 7 one-off in-app purchases. TetraClock asks for nothing beyond the download.

TetraClock ships an update every 2 days, Retrotick every 3 weeks. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | TetraClock | Retrotick |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/retrotick-split-flap-clock/id6779227825/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 2 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Legal Prompt Inc.](https://appshunter.io/developer/1490746932) | [Ekam Singh](https://appshunter.io/developer/1878486670) |

## What reviewers say

### TetraClock

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Retrotick

[App page](https://appshunter.io/ios/app/retrotick-split-flap-clock/id6779227825)

This app transforms your iPhone or iPad into a visually appealing split-flap clock, mimicking the mechanical flip of classic station displays. Enjoy authentic animations, customizable themes, and widgets for your Home and Lock Screens, all designed with a modern aesthetic.

**Highlights:** Authentic split-flap animation, Liquid Glass design, Home and Lock Screen widgets, Live Activities and Dynamic Island support, 12/24 hour format with optional seconds, Multiple digit fonts, Gallery of premium themes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sunset Ember | $1.99 | one-time |
| Neon Dusk | $1.99 | one-time |
| Aurora | $1.99 | one-time |
| Liquid Glass | $1.99 | one-time |
| Retro LCD | $1.99 | one-time |
| Synthwave | $2.99 | one-time |
| Gold Luxe | $2.99 | one-time |


## Frequently asked questions

### Is TetraClock free?

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

### Is Retrotick free?

Retrotick is free to download, with in-app purchases available.

### Do TetraClock or Retrotick have ads?

TetraClock shows ads; Retrotick does not.

### Which is updated more often, TetraClock or Retrotick?

TetraClock ships an update every 2 days, and Retrotick every 3 weeks. Most recently, TetraClock was updated on September 17, 2026 and Retrotick on September 13, 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.*