# Time Atelier vs 深海自習室

The clearest difference is ads: Time Atelier at none against 深海自習室's shown. 深海自習室's advantage is update cadence (every 2 days vs every 4 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Time Atelier sells 4 in-app purchases, starting at $7.99 per month and 深海自習室 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Time Atelier ships an update every 4 weeks, 深海自習室 every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Time Atelier | 深海自習室 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Every 2 days** |
| Size | 187 MB | 7 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [クリサク株式会社](https://appshunter.io/developer/1863063825) | [KAZUSA NAOI](https://appshunter.io/developer/1863197671) |

## What reviewers say

### Time Atelier

[App page](https://appshunter.io/ios/app/time-atelier-focus-timer/id6791036171)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $7.99 | per month |
| Opening a Flower Shop | $4.99 | one-time |
| Observatory on Starfall Hill | $4.99 | one-time |
| Logbook | $9.99 | one-time |


### 深海自習室

[App page](https://appshunter.io/ios/app/id6800208005)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 装備を新しくする | $4.99 | one-time |


## Frequently asked questions

### Is Time Atelier free?

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

### Is 深海自習室 free?

深海自習室 is free to download, with in-app purchases available.

### Do Time Atelier or 深海自習室 have ads?

深海自習室 shows ads; Time Atelier does not.

### Which is updated more often, Time Atelier or 深海自習室?

Time Atelier ships an update every 4 weeks, and 深海自習室 every 2 days. Most recently, Time Atelier was updated on October 25, 2026 and 深海自習室 on October 25, 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.*