# See through Clock vs RetroGlass

The clearest difference is in-app purchases: See through Clock at none against RetroGlass's 1. See through Clock also leads on device support (3 vs 1) and iOS requirement (15.8.3 vs 18.5). RetroGlass's advantage is ads (none vs shown). On price there is nothing between them.

Both are free to download. RetroGlass sells 1 one-off in-app purchase. See through Clock asks for nothing beyond the download.

## The numbers

| Metric | See through Clock | RetroGlass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Size | 35 MB | 2 MB |
| Requires iOS | **15.8.3** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Mewey](https://appshunter.io/developer/530958597) |

## What reviewers say

### See through Clock

[App page](https://appshunter.io/ios/app/see-through-clock/id6737430785)

**Features:** macOS Compatibility

**In-app purchases:** none


### RetroGlass

[App page](https://appshunter.io/ios/app/retroglass-pixel-hourglass/id6748237372)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


## Frequently asked questions

### Is See through Clock free?

See through Clock is free to download, with no in-app purchases.

### Is RetroGlass free?

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

### Do See through Clock or RetroGlass have ads?

See through Clock shows ads; RetroGlass does not.

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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.*