# CrownSensor vs Thermal Sniffer

The clearest difference is iOS requirement: CrownSensor at 13.0 against Thermal Sniffer's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CrownSensor ships an update every 3 days, Thermal Sniffer every 6 days. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CrownSensor | Thermal Sniffer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/crownsensor/id1581557875/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 days |
| Monetization | Free | — |
| Size | 20 MB | 2 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) | [i-developer IT Beratung UG (haftungsbeschränkt)](https://appshunter.io/developer/366217872) |

## 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


### Thermal Sniffer

[App page](https://appshunter.io/ios/app/thermal-sniffer/id6476042130)

**In-app purchases:** none


## Frequently asked questions

### Is CrownSensor free?

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

### Is Thermal Sniffer free?

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

### Do CrownSensor or Thermal Sniffer have ads?

Neither CrownSensor nor Thermal Sniffer shows ads.

### Which is updated more often, CrownSensor or Thermal Sniffer?

CrownSensor ships an update every 3 days, and Thermal Sniffer every 6 days. Most recently, CrownSensor was updated on October 1, 2026 and Thermal Sniffer on October 10, 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.*