# 환경자격증 기출문제 vs 안전동행

The clearest difference is ads: 안전동행 at none against 환경자격증 기출문제's shown. 안전동행 also leads on update cadence (every 2 weeks vs every 3 months). On price, review sentiment, 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.

환경자격증 기출문제 ships an update every 3 months, 안전동행 every 2 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 환경자격증 기출문제 | 안전동행 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 44 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Trutory Co., Ltd.](https://appshunter.io/developer/515679860) | [App Solution Company, Ltd](https://appshunter.io/developer/1669139487) |

## What reviewers say

### 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


### 안전동행

[App page](https://appshunter.io/ios/app/id6590621884)

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

**In-app purchases:** none


## Frequently asked questions

### Is 환경자격증 기출문제 free?

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

### Is 안전동행 free?

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

### Do 환경자격증 기출문제 or 안전동행 have ads?

환경자격증 기출문제 shows ads; 안전동행 does not.

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

환경자격증 기출문제 ships an update every 3 months, and 안전동행 every 2 weeks. Most recently, 환경자격증 기출문제 was updated on October 21, 2026 and 안전동행 on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*