# 百Math vs 認定プロフェッショナル イラレ 対策アプリ

The clearest difference is price: 百Math at Free against 認定プロフェッショナル イラレ 対策アプリ's $2.99. 百Math also leads on update cadence (weekly vs every 3 months). 認定プロフェッショナル イラレ 対策アプリ's advantage is ads (none vs shown) and iOS requirement (15.1 vs 18.0). On in-app purchases and device support there is nothing between them.

百Math is free to download; 認定プロフェッショナル イラレ 対策アプリ costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

百Math ships an update weekly, 認定プロフェッショナル イラレ 対策アプリ every 3 months. The most recent releases landed on August 11, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | 百Math | 認定プロフェッショナル イラレ 対策アプリ |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Ad-supported | — |
| Size | 18 MB | 44 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [naoya saito](https://appshunter.io/developer/1576521641) | [Daisuke Matsubara](https://appshunter.io/developer/1720755722) |

## What reviewers say

### 百Math

[App page](https://appshunter.io/ios/app/math-calculation-app/id1576521639)

This app helps users improve their mental arithmetic skills through a 100-problem calculation trainer. It offers various modes, progress tracking, and a global leaderboard to encourage practice and competition. A clean design and home screen widget provide convenient access.

**Highlights:** 100-problem calculation trainer, Addition, Subtraction, Multiplication, Division modes, Progress tracking (streak, average time, charts), Global ranking system, Distraction-free design, Home screen widget

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

**In-app purchases:** none


### 認定プロフェッショナル イラレ 対策アプリ

[App page](https://appshunter.io/ios/app/id6754447192)

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

**In-app purchases:** none


## Frequently asked questions

### Is 百Math free?

百Math is free to download, with no in-app purchases.

### Is 認定プロフェッショナル イラレ 対策アプリ free?

認定プロフェッショナル イラレ 対策アプリ costs $2.99, with no in-app purchases.

### Do 百Math or 認定プロフェッショナル イラレ 対策アプリ have ads?

百Math shows ads; 認定プロフェッショナル イラレ 対策アプリ does not.

### Which is updated more often, 百Math or 認定プロフェッショナル イラレ 対策アプリ?

百Math ships an update weekly, and 認定プロフェッショナル イラレ 対策アプリ every 3 months. Most recently, 百Math was updated on August 11, 2026 and 認定プロフェッショナル イラレ 対策アプリ on September 21, 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.*