# Mochii vs Instrument Classification

The clearest difference is ads: Mochii at none against Instrument Classification's shown. Instrument Classification's advantage is update cadence (every 2 weeks vs every 12 months) and iOS requirement (15.8.3 vs 17.2). 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.

Mochii ships an update every 12 months, Instrument Classification every 2 weeks. The most recent releases landed on October 2, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Mochii | Instrument Classification |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 2 weeks** |
| Size | 8 MB | 43 MB |
| Requires iOS | 17.2 | **15.8.3** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christopher Own](https://appshunter.io/developer/948967341) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Mochii

[App page](https://appshunter.io/ios/app/mochii/id948967342)

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

**In-app purchases:** none


### Instrument Classification

[App page](https://appshunter.io/ios/app/instrument-classification/id6749178763)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mochii free?

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

### Is Instrument Classification free?

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

### Do Mochii or Instrument Classification have ads?

Instrument Classification shows ads; Mochii does not.

### Which is updated more often, Mochii or Instrument Classification?

Mochii ships an update every 12 months, and Instrument Classification every 2 weeks. Most recently, Mochii was updated on October 2, 2026 and Instrument Classification on September 24, 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.*