# Camera Sound Meter vs SecureDocs Sentry

The clearest difference is ads: SecureDocs Sentry at none against Camera Sound Meter's shown. SecureDocs Sentry also leads on iOS requirement (13.0 vs 15.0). Camera Sound Meter's advantage is update cadence (every 6 weeks vs every 9 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.

Camera Sound Meter ships an update every 6 weeks, SecureDocs Sentry every 9 months. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Camera Sound Meter | SecureDocs Sentry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 9 months |
| Size | 21 MB | 73 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sooseong Park](https://appshunter.io/developer/1341519494) | [Troy Group, Inc.](https://appshunter.io/developer/1294696579) |

## What reviewers say

### Camera Sound Meter

[App page](https://appshunter.io/ios/app/camera-sound-meter/id6473820502)

**Features:** macOS Compatibility

**In-app purchases:** none


### SecureDocs Sentry

[App page](https://appshunter.io/ios/app/securedocs-sentry/id6739139524)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Camera Sound Meter free?

Camera Sound Meter is free to download, with no in-app purchases.

### Is SecureDocs Sentry free?

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

### Do Camera Sound Meter or SecureDocs Sentry have ads?

Camera Sound Meter shows ads; SecureDocs Sentry does not.

### Which is updated more often, Camera Sound Meter or SecureDocs Sentry?

Camera Sound Meter ships an update every 6 weeks, and SecureDocs Sentry every 9 months. Most recently, Camera Sound Meter was updated on September 30, 2026 and SecureDocs Sentry on October 9, 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.*