# 개발 어원 사전 vs Compendium Lab

The clearest difference is in-app purchases: 개발 어원 사전 at none against Compendium Lab's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Compendium Lab sells 1 one-off in-app purchase. 개발 어원 사전 asks for nothing beyond the download.

개발 어원 사전 ships an update monthly, Compendium Lab every 4 weeks. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 개발 어원 사전 | Compendium Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Size | 38 MB | 106 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [soyeon lee](https://appshunter.io/developer/1840166747) | [Byoungho Kim](https://appshunter.io/developer/1888452963) |

## What reviewers say

### 개발 어원 사전

[App page](https://appshunter.io/ios/app/id6790429958)

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

**In-app purchases:** none


### Compendium Lab

[App page](https://appshunter.io/ios/app/compendium-lab-math-and-ai/id6791996424)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Compendium Lab Pro | $5.99 | one-time |


## Frequently asked questions

### Is 개발 어원 사전 free?

개발 어원 사전 is free to download, with no in-app purchases.

### Is Compendium Lab free?

Compendium Lab is free to download, with in-app purchases available.

### Do 개발 어원 사전 or Compendium Lab have ads?

Neither 개발 어원 사전 nor Compendium Lab shows ads.

### Which is updated more often, 개발 어원 사전 or Compendium Lab?

개발 어원 사전 ships an update monthly, and Compendium Lab every 4 weeks. Most recently, 개발 어원 사전 was updated on October 16, 2026 and Compendium Lab on October 24, 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.*