# Teracy vs Oh Sekai

The clearest difference is iOS requirement: Oh Sekai at 15.1 against Teracy's 17.2. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Teracy | Oh Sekai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 138 MB | 54 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Teracy, Inc.](https://appshunter.io/developer/1612256683) | [sanatana design株式会社](https://appshunter.io/developer/6803532953) |

## What reviewers say

### Teracy

[App page](https://appshunter.io/ios/app/teracy/id6746098603)

**Features:** macOS Compatibility

**In-app purchases:** none


### Oh Sekai

[App page](https://appshunter.io/ios/app/oh-sekai/id6803532951)

**In-app purchases:** none


## Frequently asked questions

### Is Teracy free?

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

### Is Oh Sekai free?

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

### Do Teracy or Oh Sekai have ads?

Neither Teracy nor Oh Sekai shows ads.

### Which is updated more often, Teracy or Oh Sekai?

Teracy ships an update every 3 weeks, and Oh Sekai every 3 weeks. Most recently, Teracy was updated on October 6, 2026 and Oh Sekai on October 10, 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.*