# QC検定４級 対策 vs QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級

The clearest difference is price: QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 at Free against QC検定４級 対策's $2.99. QC検定４級 対策's advantage is in-app purchases (none vs 1) and update cadence (daily vs every 2 weeks). On ads, device support and iOS requirement there is nothing between them.

QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 is free to download; QC検定４級 対策 costs $2.99 up front. QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 sells 1 one-off in-app purchase. QC検定４級 対策 asks for nothing beyond the download.

QC検定４級 対策 ships an update daily, QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 every 2 weeks. The most recent releases landed on September 22, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | QC検定４級 対策 | QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | Free | — |
| Size | 39 MB | 51 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Daisuke Matsubara](https://appshunter.io/developer/1720755722) | [GINOAPPS LLC.](https://appshunter.io/developer/1482621114) |

## What reviewers say

### QC検定４級 対策

[App page](https://appshunter.io/ios/app/qc/id6745305229)

This app provides practice questions and learning tools to help users prepare for the QC検定 4級 (Quality Control Level 4) exam. It covers essential quality control concepts with features like random and targeted question repetition, progress tracking, and bookmarking. Designed for efficient study during commutes or breaks.

**Highlights:** Practice questions for QC検定 4級, Randomized question and answer order, Re-quiz missed questions, Study progress visualization, Customizable question count, Bookmark important questions, Dark mode support

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

**In-app purchases:** none


### QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級

[App page](https://appshunter.io/ios/app/qc4-4/id6757586574)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全問題アンロック（買い切り） | $1.99 | one-time |


## Frequently asked questions

### Is QC検定４級 対策 free?

QC検定４級 対策 costs $2.99, with no in-app purchases.

### Is QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 free?

QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 is free to download, with in-app purchases available.

### Do QC検定４級 対策 or QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 have ads?

Neither QC検定４級 対策 nor QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 shows ads.

### Which is updated more often, QC検定４級 対策 or QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級?

QC検定４級 対策 ships an update daily, and QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 every 2 weeks. Most recently, QC検定４級 対策 was updated on September 22, 2026 and QC検定®4級 秒トレ：忘却曲線で覚える品質管理検定®4級 on October 9, 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.*