# Easy to study anytime vs 公害防止管理者水質4種対策

The clearest difference is price: Easy to study anytime at Free against 公害防止管理者水質4種対策's $4.99. 公害防止管理者水質4種対策's advantage is iOS requirement (15.1 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Easy to study anytime is free to download; 公害防止管理者水質4種対策 costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Easy to study anytime ships an update every 2 months, 公害防止管理者水質4種対策 monthly. The most recent releases landed on September 20, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Easy to study anytime | 公害防止管理者水質4種対策 |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/easy-to-study-anytime/id1623144608/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 53 MB | 34 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [yoshitomo ishii](https://appshunter.io/developer/1495140436) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### Easy to study anytime

[App page](https://appshunter.io/ios/app/easy-to-study-anytime/id1623144608)

This app helps you learn by importing photos and PDF files. You can add markers and review material quickly for efficient study sessions.

**Highlights:** Import photos, Import PDF files, Add markers, Quick review, Study aid

**Features:** macOS Compatibility

**In-app purchases:** none


### 公害防止管理者水質4種対策

[App page](https://appshunter.io/ios/app/4/id6775329695)

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

**In-app purchases:** none


## Frequently asked questions

### Is Easy to study anytime free?

Easy to study anytime is free to download, with no in-app purchases.

### Is 公害防止管理者水質4種対策 free?

公害防止管理者水質4種対策 costs $4.99, with no in-app purchases.

### Do Easy to study anytime or 公害防止管理者水質4種対策 have ads?

Neither Easy to study anytime nor 公害防止管理者水質4種対策 shows ads.

### Which is updated more often, Easy to study anytime or 公害防止管理者水質4種対策?

Easy to study anytime ships an update every 2 months, and 公害防止管理者水質4種対策 monthly. Most recently, Easy to study anytime was updated on September 20, 2026 and 公害防止管理者水質4種対策 on October 2, 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.*