# シンプルFLASH暗算 vs Bio

The clearest difference is ads: Bio at none against シンプルFLASH暗算's shown. シンプルFLASH暗算's advantage is update cadence (fortnightly vs every 6 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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, Bio every 6 months. The most recent releases landed on September 14, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | シンプルFLASH暗算 | Bio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 6 months |
| Size | 4 MB | 40 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TSUKASA YONAHA](https://appshunter.io/developer/1835823966) | [Shun Okamoto](https://appshunter.io/developer/1838379045) |

## 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


### Bio

[App page](https://appshunter.io/ios/app/bio/id6757346102)

**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 Bio free?

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

### Do シンプルFLASH暗算 or Bio have ads?

シンプルFLASH暗算 shows ads; Bio does not.

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

シンプルFLASH暗算 ships an update fortnightly, and Bio every 6 months. Most recently, シンプルFLASH暗算 was updated on September 14, 2026 and Bio on August 18, 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.*