# Sound Analyzer vs Seismometer ∞

The clearest difference is in-app purchases: Seismometer ∞ at none against Sound Analyzer's 3. Sound Analyzer's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Sound Analyzer sells 3 in-app purchases, starting at $1.99 per 7 days. Seismometer ∞ asks for nothing beyond the download.

Sound Analyzer ships an update fortnightly, Seismometer ∞ every 2 weeks. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sound Analyzer | Seismometer ∞ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 5 MB | 16 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Stas Foltea](https://appshunter.io/developer/1861812130) | [辰巳家有限公司](https://appshunter.io/developer/1781943256) |

## What reviewers say

### Sound Analyzer

[App page](https://appshunter.io/ios/app/sound-analyzer-db-meter/id6756615642)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $1.99 | per 7 days |
| Pro Annual | $19.99 | per year |
| Lifetime Pro | $29.99 | one-time |


### Seismometer ∞

[App page](https://appshunter.io/ios/app/seismometer/id6761700650)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sound Analyzer free?

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

### Is Seismometer ∞ free?

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

### Do Sound Analyzer or Seismometer ∞ have ads?

Seismometer ∞ shows ads; Sound Analyzer does not.

### Which is updated more often, Sound Analyzer or Seismometer ∞?

Sound Analyzer ships an update fortnightly, and Seismometer ∞ every 2 weeks. Most recently, Sound Analyzer was updated on October 8, 2026 and Seismometer ∞ on October 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.*