# Calculation Practice vs 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」

The clearest difference is price: 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 at Free against Calculation Practice's $0.99. 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 also leads on review sentiment (38% vs 0%) and update cadence (every 3 months vs every 17 months). Calculation Practice's advantage is ads (none vs shown). On in-app purchases there is nothing between them.

九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 is free to download; Calculation Practice costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculation Practice ships an update every 17 months, 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 every 3 months. The most recent releases landed on November 1, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Calculation Practice | 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id894395724/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **38.1% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 17 months | **Every 3 months** |
| Monetization | Paid | **Ad-supported** |
| Size | 2 MB | 286 MB |
| Requires iOS | 18.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hideomi Sato](https://appshunter.io/developer/601939713) | [Pixel Co., Ltd.](https://appshunter.io/developer/1743924614) |

## What reviewers say

### Calculation Practice

[App page](https://appshunter.io/ios/app/calculation-practice/id601939710)

Master fundamental math skills with this interactive flashcard app. Choose the correct answer from multiple choices for randomly generated calculations. Track your progress with accuracy and time metrics after each session.

**Highlights:** Randomized calculation problems, Multiple-choice answers, Auditory feedback for correct answers, Progress tracking (correct answers, time), Daily practice reinforcement

**Features:** macOS Compatibility

**In-app purchases:** none


### 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」

[App page](https://appshunter.io/ios/app/id894395724)

This app makes learning multiplication tables fun for children. Solve problems to collect and evolve monsters, filling a monster encyclopedia. Features multiple learning modes and challenges to build math skills.

**Highlights:** Learn multiplication tables (1-9), Collect and evolve 40 unique monsters, Three learning modes: sequential, reverse, random, Daily challenge with word problems, Monster encyclopedia completion, Game-like learning for engagement

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculation Practice free?

Calculation Practice costs $0.99, with no in-app purchases.

### Is 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 free?

九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 is free to download, with no in-app purchases.

### Do Calculation Practice or 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 have ads?

九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 shows ads; Calculation Practice does not.

### Which is updated more often, Calculation Practice or 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」?

Calculation Practice ships an update every 17 months, and 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 every 3 months. Most recently, Calculation Practice was updated on November 1, 2026 and 九九を覚えてモンスター図鑑あつめ！ 「九九のトライ」 on November 13, 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.*