# Onsei vs Twig

The clearest difference is iOS requirement: Onsei at 15.1 against Twig's 17.0. 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.

Onsei ships an update every 10 days, Twig every 8 days. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Onsei | Twig |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 8 days** |
| Size | 33 MB | 16 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [鑫 陈](https://appshunter.io/developer/1709457072) | [聪 陈](https://appshunter.io/developer/1796847610) |

## What reviewers say

### Onsei

[App page](https://appshunter.io/ios/app/onsei/id6761715885)

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

**In-app purchases:** none


### Twig

[App page](https://appshunter.io/ios/app/twig-language-buddy/id6763448031)

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

**In-app purchases:** none


## Frequently asked questions

### Is Onsei free?

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

### Is Twig free?

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

### Do Onsei or Twig have ads?

Neither Onsei nor Twig shows ads.

### Which is updated more often, Onsei or Twig?

Onsei ships an update every 10 days, and Twig every 8 days. Most recently, Onsei was updated on October 6, 2026 and Twig 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.*