# Adic vs 公害防止管理者 水質1種 問題集

The clearest difference is update cadence: 公害防止管理者 水質1種 問題集 at fortnightly against Adic's every 2 months. 公害防止管理者 水質1種 問題集 also leads on iOS requirement (15.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Adic sells 1 in-app purchase, starting at $5.99 per month and 公害防止管理者 水質1種 問題集 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Adic ships an update every 2 months, 公害防止管理者 水質1種 問題集 fortnightly. The most recent releases landed on October 17, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Adic | 公害防止管理者 水質1種 問題集 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 17 MB | 31 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Wuhan Beijing Technology Co., Ltd.](https://appshunter.io/developer/1825514925) | [Takuro Fukuma](https://appshunter.io/developer/1896728656) |

## What reviewers say

### Adic

[App page](https://appshunter.io/ios/app/adic-word-lookup-memorization/id6764212338)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $5.99 | per month |


### 公害防止管理者 水質1種 問題集

[App page](https://appshunter.io/ios/app/1/id6792692236)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全問解放（買い切り） | $6.99 | one-time |


## Frequently asked questions

### Is Adic free?

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

### Is 公害防止管理者 水質1種 問題集 free?

公害防止管理者 水質1種 問題集 is free to download, with in-app purchases available.

### Do Adic or 公害防止管理者 水質1種 問題集 have ads?

Neither Adic nor 公害防止管理者 水質1種 問題集 shows ads.

### Which is updated more often, Adic or 公害防止管理者 水質1種 問題集?

Adic ships an update every 2 months, and 公害防止管理者 水質1種 問題集 fortnightly. Most recently, Adic was updated on October 17, 2026 and 公害防止管理者 水質1種 問題集 on September 27, 2026.

---

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