# FFAアプリ vs Math Zen

The clearest difference is in-app purchases: FFAアプリ at none against Math Zen's 6. FFAアプリ also leads on iOS requirement (14.0 vs 16.4). Math Zen's advantage is update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Math Zen sells 6 in-app purchases, starting at $3.99 per 7 days. FFAアプリ asks for nothing beyond the download.

FFAアプリ ships an update every 2 months, Math Zen every 3 days. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | FFAアプリ | Math Zen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/math-zen-exam-prep-and-drill/id6758208511/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 264 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [金融知力普及協会](https://appshunter.io/developer/924931898) | [Ivan Terekhin](https://appshunter.io/developer/888645337) |

## What reviewers say

### FFAアプリ

[App page](https://appshunter.io/ios/app/ffa/id1608462053)

**Features:** macOS Compatibility

**In-app purchases:** none


### Math Zen

[App page](https://appshunter.io/ios/app/math-zen-exam-prep-and-drill/id6758208511)

This app provides adaptive math practice for standardized exams and university-level courses. It generates unique problems, tracks mastery, and offers offline access for focused learning. Review mistakes and visualize concepts to build long-term retention.

**Highlights:** Algorithmically generated problems, Adaptive mastery-based progression, Mistake journal for review, Visual problem explanations, Offline access, Exam-specific problem sets

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Zen Premium — Weekly | $3.99 | per 7 days |
| Math Zen Premium — Monthly | $6.99 | per month |
| Math Zen Premium — Annual | $29.99 | per year |
| Math Zen Premium: Lifetime | $24.99 | one-time |
| Math Zen Premium: Lifetime | $29.99 | one-time |
| Math Zen Premium — Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is FFAアプリ free?

FFAアプリ is free to download, with no in-app purchases.

### Is Math Zen free?

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

### Do FFAアプリ or Math Zen have ads?

Neither FFAアプリ nor Math Zen shows ads.

### Which is updated more often, FFAアプリ or Math Zen?

FFAアプリ ships an update every 2 months, and Math Zen every 3 days. Most recently, FFAアプリ was updated on October 19, 2026 and Math Zen on October 17, 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.*