# よく見るとおかしい画像 9時限目！ vs マルッと修正！アカデミア

The clearest difference is in-app purchases: よく見るとおかしい画像 9時限目！ at none against マルッと修正！アカデミア's 3. よく見るとおかしい画像 9時限目！ also leads on ads (none vs shown) and review sentiment (76% vs 50%). マルッと修正！アカデミア's advantage is update cadence (every 3 months vs every 13 months). On price and device support there is nothing between them.

Both are free to download. マルッと修正！アカデミア sells 3 one-off in-app purchases. よく見るとおかしい画像 9時限目！ asks for nothing beyond the download.

よく見るとおかしい画像 9時限目！ ships an update every 13 months, マルッと修正！アカデミア every 3 months. The most recent releases landed on October 7, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | よく見るとおかしい画像 9時限目！ | マルッと修正！アカデミア |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/9/id1332983446/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **76.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 168 MB | 195 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [MASK APP LLC](https://appshunter.io/developer/1145303731) | [NOELITH, INC.](https://appshunter.io/developer/1659312327) |

## What reviewers say

### よく見るとおかしい画像 9時限目！

[App page](https://appshunter.io/ios/app/9/id1332983446)

This puzzle game challenges players to find subtle differences in images. By carefully examining pictures and tapping on the unusual elements, players can test their observation skills. It's a fun way to engage your brain with visually intriguing challenges.

**Highlights:** Find subtle image differences, Tap on strange parts, Visually engaging puzzles, Observation skill test, Simple tap controls

**Features:** macOS Compatibility

**In-app purchases:** none


### マルッと修正！アカデミア

[App page](https://appshunter.io/ios/app/id6448621097)

Engage in a fun spot-the-difference game where you play as a student aiming to become a proofreader. Find mistakes in various scenarios, from school life to internships, to hone your observation skills. Enjoy a relaxed gameplay experience with no time limits or penalties.

**Highlights:** Spot 3-5 differences per stage, Hint and answer system, Stage selection and volume control, No time limits, No penalties or game overs, 50 free stages

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告削除Aパック | $0.99 | one-time |
| 広告削除Bパック | $0.99 | one-time |
| 広告削除ABお得パック | $1.99 | one-time |


## Frequently asked questions

### Is よく見るとおかしい画像 9時限目！ free?

よく見るとおかしい画像 9時限目！ is free to download, with no in-app purchases.

### Is マルッと修正！アカデミア free?

マルッと修正！アカデミア is free to download, with in-app purchases available.

### Do よく見るとおかしい画像 9時限目！ or マルッと修正！アカデミア have ads?

マルッと修正！アカデミア shows ads; よく見るとおかしい画像 9時限目！ does not.

### Which is updated more often, よく見るとおかしい画像 9時限目！ or マルッと修正！アカデミア?

よく見るとおかしい画像 9時限目！ ships an update every 13 months, and マルッと修正！アカデミア every 3 months. Most recently, よく見るとおかしい画像 9時限目！ was updated on October 7, 2026 and マルッと修正！アカデミア on September 29, 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.*