# OSS vs E資格 問題集

The clearest difference is price: E資格 問題集 at Free against OSS's $3.99. OSS's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

E資格 問題集 is free to download; OSS costs $3.99 up front. E資格 問題集 sells 1 one-off in-app purchase. OSS asks for nothing beyond the download.

## The numbers

| Metric | OSS | E資格 問題集 |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | — |
| Size | 44 MB | 34 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daisuke Matsubara](https://appshunter.io/developer/1720755722) | [takahashi masaki](https://appshunter.io/developer/1855419759) |

## What reviewers say

### OSS

[App page](https://appshunter.io/ios/app/oss-db-silver/id6745166641)

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

**In-app purchases:** none


### E資格 問題集

[App page](https://appshunter.io/ios/app/e/id6762594426)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| E-JDLA Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is OSS free?

OSS costs $3.99, with no in-app purchases.

### Is E資格 問題集 free?

E資格 問題集 is free to download, with in-app purchases available.

### Do OSS or E資格 問題集 have ads?

Neither OSS nor E資格 問題集 shows ads.

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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.*