# Mechanical Sound ID vs Pæan Ring

The clearest difference is ads: Pæan Ring at none against Mechanical Sound ID's shown. Pæan Ring also leads on update cadence (every 4 days vs fortnightly). Mechanical Sound ID's advantage is iOS requirement (15.8.3 vs 26.0). On price, in-app purchases and device support there is nothing between them.

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

Mechanical Sound ID ships an update fortnightly, Pæan Ring every 4 days. The most recent releases landed on August 3, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Mechanical Sound ID | Pæan Ring |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 36 MB | 7 MB |
| Requires iOS | **15.8.3** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Shanghai Zero One Intelligence Ltd.](https://appshunter.io/developer/463264937) |

## What reviewers say

### Mechanical Sound ID

[App page](https://appshunter.io/ios/app/mechanical-sound-id/id6738972003)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pæan Ring

[App page](https://appshunter.io/ios/app/pan-ring/id6757629544)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Sound ID free?

Mechanical Sound ID is free to download, with no in-app purchases.

### Is Pæan Ring free?

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

### Do Mechanical Sound ID or Pæan Ring have ads?

Mechanical Sound ID shows ads; Pæan Ring does not.

### Which is updated more often, Mechanical Sound ID or Pæan Ring?

Mechanical Sound ID ships an update fortnightly, and Pæan Ring every 4 days. Most recently, Mechanical Sound ID was updated on August 3, 2026 and Pæan Ring on September 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.*