# 速度計 vs マイ・Nシステム

The clearest difference is in-app purchases: マイ・Nシステム at none against 速度計's 4. マイ・Nシステム also leads on ads (none vs shown) and update cadence (every 11 days vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 速度計 sells 4 one-off in-app purchases. マイ・Nシステム asks for nothing beyond the download.

速度計 ships an update every 4 months, マイ・Nシステム every 11 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 速度計 | マイ・Nシステム |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 11 days** |
| Size | 65 MB | 44 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [hidehiko aihara](https://appshunter.io/developer/1178520609) | [Maiji Saito](https://appshunter.io/developer/671719488) |

## What reviewers say

### 速度計

[App page](https://appshunter.io/ios/app/speedmeter/id1641293313)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| アプリケーション開発者への応援募金 | $1.99 | one-time |
| Coffee (Large) | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


### マイ・Nシステム

[App page](https://appshunter.io/ios/app/n/id6757866618)

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

**In-app purchases:** none


## Frequently asked questions

### Is 速度計 free?

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

### Is マイ・Nシステム free?

マイ・Nシステム is free to download, with no in-app purchases.

### Do 速度計 or マイ・Nシステム have ads?

速度計 shows ads; マイ・Nシステム does not.

### Which is updated more often, 速度計 or マイ・Nシステム?

速度計 ships an update every 4 months, and マイ・Nシステム every 11 days. Most recently, 速度計 was updated on October 30, 2026 and マイ・Nシステム on October 28, 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.*