# See through Clock vs ET時計

The clearest difference is ads: ET時計 at none against See through Clock's shown. ET時計 also leads on update cadence (every 4 days vs fortnightly) and iOS requirement (13.0 vs 15.8.3). On price, in-app purchases and device support there is nothing between them.

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

See through Clock ships an update fortnightly, ET時計 every 4 days. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | See through Clock | ET時計 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 35 MB | 59 MB |
| Requires iOS | 15.8.3 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [takayuki atsumi](https://appshunter.io/developer/1495474977) |

## What reviewers say

### See through Clock

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ET時計

[App page](https://appshunter.io/ios/app/et/id6756083760)

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

**In-app purchases:** none


## Frequently asked questions

### Is See through Clock free?

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

### Is ET時計 free?

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

### Do See through Clock or ET時計 have ads?

See through Clock shows ads; ET時計 does not.

### Which is updated more often, See through Clock or ET時計?

See through Clock ships an update fortnightly, and ET時計 every 4 days. Most recently, See through Clock was updated on October 12, 2026 and ET時計 on October 11, 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.*