# SIC824B vs Instrument Classification

The clearest difference is ads: SIC824B at none against Instrument Classification's shown. SIC824B also leads on iOS requirement (13 vs 15.8.3). Instrument Classification's advantage is update cadence (every 2 weeks vs every 7 months). 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.

SIC824B ships an update every 7 months, Instrument Classification every 2 weeks. The most recent releases landed on September 14, 2026 and August 1, 2026 respectively.

## The numbers

| Metric | SIC824B | Instrument Classification |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Size | 21 MB | 43 MB |
| Requires iOS | **13** | 15.8.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SILICON CRAFT TECHNOLOGY PUBLIC COMPANY LIMITED](https://appshunter.io/developer/1279674870) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### SIC824B

[App page](https://appshunter.io/ios/app/sic824b/id1661747571)

**Features:** macOS Compatibility

**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 SIC824B free?

SIC824B 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 SIC824B or Instrument Classification have ads?

Instrument Classification shows ads; SIC824B does not.

### Which is updated more often, SIC824B or Instrument Classification?

SIC824B ships an update every 7 months, and Instrument Classification every 2 weeks. Most recently, SIC824B was updated on September 14, 2026 and Instrument Classification on August 1, 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.*