# SoundClass vs BlankState Diagnostic

The clearest difference is in-app purchases: BlankState Diagnostic at none against SoundClass's 2. BlankState Diagnostic also leads on ads (none vs shown) and iOS requirement (17.6 vs 26.0). On price, update cadence and device support there is nothing between them.

Both are free to download. SoundClass sells 2 one-off in-app purchases. BlankState Diagnostic asks for nothing beyond the download.

SoundClass ships an update every 10 days, BlankState Diagnostic every 2 weeks. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SoundClass | BlankState Diagnostic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (10 ratings)](https://appshunter.io/ios/app/soundclass/id1511338627/reviews)** | — |
| Number of ratings | **10** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 1 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Javier Ariel Bargas](https://appshunter.io/developer/1511337275) | [Stabilise Ltd](https://appshunter.io/developer/1886824842) |

## What reviewers say

### SoundClass

[App page](https://appshunter.io/ios/app/soundclass/id1511338627)

This app uses AI to detect and record various sounds in your environment, providing real-time alerts. It's particularly useful for nighttime awareness, sleep analysis, and documenting incidents.

**Highlights:** AI sound detection, Real-time alerts, Sleep quality analysis, Sound recording and playback, Mosquito and animal sound detection, Everyday sound identification

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Battery x 10 | $0.99 | one-time |
| Battery x 40 | $1.99 | one-time |


### BlankState Diagnostic

[App page](https://appshunter.io/ios/app/blankstate-diagnostic/id6760920995)

**In-app purchases:** none


## Frequently asked questions

### Is SoundClass free?

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

### Is BlankState Diagnostic free?

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

### Do SoundClass or BlankState Diagnostic have ads?

SoundClass shows ads; BlankState Diagnostic does not.

### Which is updated more often, SoundClass or BlankState Diagnostic?

SoundClass ships an update every 10 days, and BlankState Diagnostic every 2 weeks. Most recently, SoundClass was updated on September 8, 2026 and BlankState Diagnostic on September 22, 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.*