# シンプルFLASH暗算 vs MathGrid 100

シンプルFLASH暗算 and MathGrid 100 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

シンプルFLASH暗算 ships an update fortnightly, MathGrid 100 every 3 weeks. The most recent releases landed on September 14, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | シンプルFLASH暗算 | MathGrid 100 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 4 MB | 40 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TSUKASA YONAHA](https://appshunter.io/developer/1835823966) | [Hiroyuki Ishikawa](https://appshunter.io/developer/1876490408) |

## What reviewers say

### シンプルFLASH暗算

[App page](https://appshunter.io/ios/app/flash/id6751562239)

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

**In-app purchases:** none


### MathGrid 100

[App page](https://appshunter.io/ios/app/mathgrid-100/id6759038224)

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

**In-app purchases:** none


## Frequently asked questions

### Is シンプルFLASH暗算 free?

シンプルFLASH暗算 is free to download, with no in-app purchases.

### Is MathGrid 100 free?

MathGrid 100 is free to download, with no in-app purchases.

### Do シンプルFLASH暗算 or MathGrid 100 have ads?

Both シンプルFLASH暗算 and MathGrid 100 show ads.

### Which is updated more often, シンプルFLASH暗算 or MathGrid 100?

シンプルFLASH暗算 ships an update fortnightly, and MathGrid 100 every 3 weeks. Most recently, シンプルFLASH暗算 was updated on September 14, 2026 and MathGrid 100 on September 19, 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.*