# CS사전 vs CodeStudy

The clearest difference is update cadence: CS사전 at every 2 days against CodeStudy's every 6 days. CS사전 also leads on iOS requirement (16.0 vs 18.0). On price, ads, 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.

CS사전 ships an update every 2 days, CodeStudy every 6 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CS사전 | CodeStudy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 6 days |
| Size | 12 MB | 4 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [dongseok ju](https://appshunter.io/developer/1592949836) | [ByeongYun In](https://appshunter.io/developer/1632990861) |

## What reviewers say

### CS사전

[App page](https://appshunter.io/ios/app/cs/id6480402361)

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

**In-app purchases:** none


### CodeStudy

[App page](https://appshunter.io/ios/app/codestudy-ai-coding-tutor/id6762127373)

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

**In-app purchases:** none


## Frequently asked questions

### Is CS사전 free?

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

### Is CodeStudy free?

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

### Do CS사전 or CodeStudy have ads?

Neither CS사전 nor CodeStudy shows ads.

### Which is updated more often, CS사전 or CodeStudy?

CS사전 ships an update every 2 days, and CodeStudy every 6 days. Most recently, CS사전 was updated on October 27, 2026 and CodeStudy 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.*