# 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ vs 瞬間記憶

The clearest difference is review sentiment: 瞬間記憶 at 100% against 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~'s 41%. 瞬間記憶 also leads on iOS requirement (11.0 vs 15.6). 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~'s advantage is update cadence (every 10 days vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ ships an update every 10 days, 瞬間記憶 every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ | 瞬間記憶 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/2iq/id1115273015/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 41.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 12 MB | 101 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ikue Konno](https://appshunter.io/developer/971968281) | [ZERONE](https://appshunter.io/developer/1708775781) |

## What reviewers say

### 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~

[App page](https://appshunter.io/ios/app/2iq/id1115273015)

A brain training app designed for adults to sharpen their minds with a variety of riddles. It offers 100 questions ranging from easy to challenging, perfect for passing the time and stimulating your intellect.

**Highlights:** Brain training for adults, 100 riddle questions, Varied difficulty levels, IQ and cipher quizzes, Time-killing entertainment

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

**In-app purchases:** none


### 瞬間記憶

[App page](https://appshunter.io/ios/app/id1473696933)

A simple puzzle game designed to improve your memory and cognitive skills. Test your brain age by memorizing number patterns and tapping the correct sequence. Play regularly to activate your brain and see how sharp you are.

**Highlights:** Memory game with numbers, Brain age diagnosis, Simple tap controls, Brain activation through play, Puzzle gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ free?

大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ is free to download, with no in-app purchases.

### Is 瞬間記憶 free?

瞬間記憶 is free to download, with no in-app purchases.

### Do 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ or 瞬間記憶 have ads?

Both 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ and 瞬間記憶 show ads.

### Which is updated more often, 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ or 瞬間記憶?

大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ ships an update every 10 days, and 瞬間記憶 every 2 months. Most recently, 大人のなぞなぞ 2~暇つぶし脳トレIQアプリ~ was updated on November 2, 2026 and 瞬間記憶 on November 3, 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.*