# QB説明　２年　長さと水のかさ vs HayaFlow

The clearest difference is price: HayaFlow at Free against QB説明　２年　長さと水のかさ's $3.99. HayaFlow also leads on update cadence (every 5 days vs every 32 months) and device support (3 vs 1). QB説明　２年　長さと水のかさ's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 18). On ads there is nothing between them.

HayaFlow is free to download; QB説明　２年　長さと水のかさ costs $3.99 up front. HayaFlow sells 1 one-off in-app purchase. QB説明　２年　長さと水のかさ asks for nothing beyond the download.

QB説明　２年　長さと水のかさ ships an update every 32 months, HayaFlow every 5 days. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | QB説明　２年　長さと水のかさ | HayaFlow |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 5 days** |
| Size | 9 MB | 6 MB |
| Requires iOS | **13.0** | 18 |
| Devices | iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Suzuki Educational Software Co.,Ltd.](https://appshunter.io/developer/585512975) | [Masato Hayashi](https://appshunter.io/developer/1856848263) |

## What reviewers say

### QB説明　２年　長さと水のかさ

[App page](https://appshunter.io/ios/app/qb/id1470191466)

**In-app purchases:** none


### HayaFlow

[App page](https://appshunter.io/ios/app/hayaflow-flowchart-tool/id6761299030)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HayaFlow Unlock Full Function | $2.99 | one-time |


## Frequently asked questions

### Is QB説明　２年　長さと水のかさ free?

QB説明　２年　長さと水のかさ costs $3.99, with no in-app purchases.

### Is HayaFlow free?

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

### Do QB説明　２年　長さと水のかさ or HayaFlow have ads?

Neither QB説明　２年　長さと水のかさ nor HayaFlow shows ads.

### Which is updated more often, QB説明　２年　長さと水のかさ or HayaFlow?

QB説明　２年　長さと水のかさ ships an update every 32 months, and HayaFlow every 5 days. Most recently, QB説明　２年　長さと水のかさ was updated on October 10, 2026 and HayaFlow on October 20, 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.*