# Ninimaths vs 暗記ブースト 声＋耳で記憶する学習アプリ

The clearest difference is in-app purchases: 暗記ブースト 声＋耳で記憶する学習アプリ at none against Ninimaths's 3. 暗記ブースト 声＋耳で記憶する学習アプリ also leads on update cadence (every 3 days vs every 2 months). Ninimaths's advantage is ads (none vs shown) and iOS requirement (13.0 vs 16.0). On price, review sentiment and device support there is nothing between them.

Both are free to download. Ninimaths sells 3 one-off in-app purchases. 暗記ブースト 声＋耳で記憶する学習アプリ asks for nothing beyond the download.

Ninimaths ships an update every 2 months, 暗記ブースト 声＋耳で記憶する学習アプリ every 3 days. The most recent releases landed on October 20, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Ninimaths | 暗記ブースト 声＋耳で記憶する学習アプリ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (45 ratings)](https://appshunter.io/ios/app/ninimaths/id647989498/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 97.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 11 MB | 17 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Ninicode](https://appshunter.io/developer/647989501) | [有限会社イーフォルダ](https://appshunter.io/developer/1052522697) |

## What reviewers say

### Ninimaths

[App page](https://appshunter.io/ios/app/ninimaths/id647989498)

Enhance your mental arithmetic skills with a variety of calculation modes. Practice addition, subtraction, multiplication, and division with customizable number ranges and column display. Track your progress with daily scores and compete with others through a ranking system.

**Highlights:** Multiple calculation modes (add, subtract, multiply, divide, mix), Customizable number ranges (1-5 digits), Column display format, Daily score recording and graphing, Game Center ranking, Time trial mode

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Hamburger | $1.99 | one-time |
| Ramen | $4.99 | one-time |


### 暗記ブースト 声＋耳で記憶する学習アプリ

[App page](https://appshunter.io/ios/app/id6759517112)

This app aids memorization by playing back your voice in real-time through wired headphones. It combines speaking and listening to enhance memory retention and can also be used for speech and pronunciation practice. A built-in timer helps manage study time and improve focus.

**Highlights:** Real-time voice playback for memorization, Combines auditory and vocal learning, Speech and pronunciation practice, Integrated focus timer, Requires wired headphones

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

**In-app purchases:** none


## Frequently asked questions

### Is Ninimaths free?

Ninimaths is free to download, with in-app purchases available.

### Is 暗記ブースト 声＋耳で記憶する学習アプリ free?

暗記ブースト 声＋耳で記憶する学習アプリ is free to download, with no in-app purchases.

### Do Ninimaths or 暗記ブースト 声＋耳で記憶する学習アプリ have ads?

暗記ブースト 声＋耳で記憶する学習アプリ shows ads; Ninimaths does not.

### Which is updated more often, Ninimaths or 暗記ブースト 声＋耳で記憶する学習アプリ?

Ninimaths ships an update every 2 months, and 暗記ブースト 声＋耳で記憶する学習アプリ every 3 days. Most recently, Ninimaths was updated on October 20, 2026 and 暗記ブースト 声＋耳で記憶する学習アプリ on October 11, 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.*