# 김영삼도서관 vs 환경자격증 기출문제

The clearest difference is ads: 김영삼도서관 at none against 환경자격증 기출문제's shown. 김영삼도서관 also leads on iOS requirement (12.0 vs 14.0). 환경자격증 기출문제's advantage is update cadence (every 3 months vs every 7 months). On price, 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.

김영삼도서관 ships an update every 7 months, 환경자격증 기출문제 every 3 months. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 김영삼도서관 | 환경자격증 기출문제 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 90 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 17+ |
| Developer | [ido-it Co. Ltd.](https://appshunter.io/developer/610142253) | [Trutory Co., Ltd.](https://appshunter.io/developer/515679860) |

## What reviewers say

### 김영삼도서관

[App page](https://appshunter.io/ios/app/id1537525318)

**In-app purchases:** none


### 환경자격증 기출문제

[App page](https://appshunter.io/ios/app/id6502931007)

Access past exam questions for various environmental certifications. Choose your exam, practice with different modes, and review your performance. Ads can be removed via subscription.

**Highlights:** Extensive past exam questions, Multiple exam options, Study and practice modes, Answer and incorrect answer notes, Bookmark important questions, Automatic progression option

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

**In-app purchases:** none


## Frequently asked questions

### Is 김영삼도서관 free?

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

### Is 환경자격증 기출문제 free?

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

### Do 김영삼도서관 or 환경자격증 기출문제 have ads?

환경자격증 기출문제 shows ads; 김영삼도서관 does not.

### Which is updated more often, 김영삼도서관 or 환경자격증 기출문제?

김영삼도서관 ships an update every 7 months, and 환경자격증 기출문제 every 3 months. Most recently, 김영삼도서관 was updated on October 14, 2026 and 환경자격증 기출문제 on October 21, 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.*