# CrownSensor vs SecretShield

The clearest difference is in-app purchases: CrownSensor at none against SecretShield's 4. CrownSensor also leads on update cadence (every 3 days vs every 3 weeks) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. SecretShield sells 4 in-app purchases, starting at $19.99 per month. CrownSensor asks for nothing beyond the download.

CrownSensor ships an update every 3 days, SecretShield every 3 weeks. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CrownSensor | SecretShield |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/crownsensor/id1581557875/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 20 MB | 38 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Lanke Xuntong Technology Co., Ltd.](https://appshunter.io/developer/640898259) | [Secret Shield Inc.](https://appshunter.io/developer/1765046506) |

## What reviewers say

### CrownSensor

[App page](https://appshunter.io/ios/app/crownsensor/id1581557875)

Control your phone's volume and screen brightness using Bluetooth-connected IoT hardware. This app enables seamless integration for managing device settings remotely.

**Highlights:** Bluetooth IoT hardware integration, Mobile phone volume control, Screen brightness adjustment, Remote device setting management

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

**In-app purchases:** none


### SecretShield

[App page](https://appshunter.io/ios/app/secretshield/id6670149348)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $19.99 | per month |
| Inheritance | $49.99 | per month |
| Basic | $199.00 | per year |
| Inheritance | $499.00 | per year |


## Frequently asked questions

### Is CrownSensor free?

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

### Is SecretShield free?

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

### Do CrownSensor or SecretShield have ads?

Neither CrownSensor nor SecretShield shows ads.

### Which is updated more often, CrownSensor or SecretShield?

CrownSensor ships an update every 3 days, and SecretShield every 3 weeks. Most recently, CrownSensor was updated on October 1, 2026 and SecretShield on October 4, 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.*