# Instruments vs ST Integrity App

The clearest difference is price: ST Integrity App at Free against Instruments's $1.99. ST Integrity App also leads on iOS requirement (12.0 vs 17.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

ST Integrity App is free to download; Instruments costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Instruments ships an update every 6 months, ST Integrity App every 4 months. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Instruments | ST Integrity App |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/instruments/id609722633/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Paid | — |
| Size | 24 MB | 30 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [Christophe Burdin](https://appshunter.io/developer/511622913) | [STMicroelectronics](https://appshunter.io/developer/1801774735) |

## What reviewers say

### Instruments

[App page](https://appshunter.io/ios/app/instruments/id609722633)

Explore a vibrant collection of 55 musical instruments with interactive sound and visuals. Learn instrument names and sounds in 78 languages, perfect for young children and language learners. This offline app offers a safe, ad-free, and engaging musical discovery experience.

**Highlights:** 55 interactive musical instruments, Real sounds and spoken names, Supports 78 languages, Offline functionality, Adjustable slideshow mode, Parental gate for settings

**Features:** macOS Compatibility

**In-app purchases:** none


### ST Integrity App

[App page](https://appshunter.io/ios/app/st-integrity-app/id1301440442)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Instruments free?

Instruments costs $1.99, with no in-app purchases.

### Is ST Integrity App free?

ST Integrity App is free to download, with no in-app purchases.

### Do Instruments or ST Integrity App have ads?

Neither Instruments nor ST Integrity App shows ads.

### Which is updated more often, Instruments or ST Integrity App?

Instruments ships an update every 6 months, and ST Integrity App every 4 months. Most recently, Instruments was updated on October 4, 2026 and ST Integrity App on October 3, 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.*