# Checknights vs OS Translator

The clearest difference is in-app purchases: Checknights at none against OS Translator's 1. Checknights also leads on ads (none vs shown) and iOS requirement (17.6 vs 27.0). On price, update cadence and device support there is nothing between them.

Both are free to download. OS Translator sells 1 one-off in-app purchase. Checknights asks for nothing beyond the download.

Checknights ships an update fortnightly, OS Translator every 8 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Checknights | OS Translator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/os-translator-live-screen/id6820988446/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 15 MB | 13 MB |
| Requires iOS | **17.6** | 27.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sangwoo Han](https://appshunter.io/developer/1807081364) | [Sunghyun Kim](https://appshunter.io/developer/1851774589) |

## What reviewers say

### Checknights

[App page](https://appshunter.io/ios/app/checknights/id6744324413)

**Features:** Apple Watch app

**In-app purchases:** none


### OS Translator

[App page](https://appshunter.io/ios/app/os-translator-live-screen/id6820988446)

Instantly translate text on your screen while using other apps. It supports games, comics, and online shops, displaying translations in a Picture in Picture window. Choose between mirroring the original text or viewing translations as a list.

**Highlights:** Live on-screen translation, Picture in Picture window, Mirror mode for text overlay, Subtitles mode for dialogue lists, Offline translation support, Supports 20 languages

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is Checknights free?

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

### Is OS Translator free?

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

### Do Checknights or OS Translator have ads?

OS Translator shows ads; Checknights does not.

### Which is updated more often, Checknights or OS Translator?

Checknights ships an update fortnightly, and OS Translator every 8 days. Most recently, Checknights was updated on November 5, 2026 and OS Translator on November 6, 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.*