# 环保工程师题库 vs 消防工程师2025

The clearest difference is iOS requirement: 环保工程师题库 at 12.0 against 消防工程师2025's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 环保工程师题库 sells 10 one-off in-app purchases and 消防工程师2025 sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

环保工程师题库 ships an update every 5 months, 消防工程师2025 every 7 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 环保工程师题库 | 消防工程师2025 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Size | 88 MB | 53 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Changsha Xisai Liman Education Technology Co., Ltd](https://appshunter.io/developer/1466745593) | [Chongqing Kaixin network technology Co., LTD](https://appshunter.io/developer/1809882583) |

## What reviewers say

### 环保工程师题库

[App page](https://appshunter.io/ios/app/id1521970478)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10学币 | $0.99 | one-time |
| 1学币 | $0.99 | one-time |
| 40学币 | $5.99 | one-time |
| 50学币 | $6.99 | one-time |
| 三个月题库 | $11.99 | one-time |
| 三个月找答案+题库 | $14.99 | one-time |
| 100学币 | $14.99 | one-time |
| 120学币 | $17.99 | one-time |
| 150学币 | $19.99 | one-time |
| 300学币 | $39.99 | one-time |


### 消防工程师2025

[App page](https://appshunter.io/ios/app/2025/id6745855480)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 购买会员1个月 | $2.99 | one-time |
| 购买会员3个月 | $3.99 | one-time |
| 购买会员6个月 | $6.99 | one-time |
| 购买会员12个月 | $12.99 | one-time |


## Frequently asked questions

### Is 环保工程师题库 free?

环保工程师题库 is free to download, with in-app purchases available.

### Is 消防工程师2025 free?

消防工程师2025 is free to download, with in-app purchases available.

### Do 环保工程师题库 or 消防工程师2025 have ads?

Neither 环保工程师题库 nor 消防工程师2025 shows ads.

### Which is updated more often, 环保工程师题库 or 消防工程师2025?

环保工程师题库 ships an update every 5 months, and 消防工程师2025 every 7 months. Most recently, 环保工程师题库 was updated on October 25, 2026 and 消防工程师2025 on October 28, 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.*