# Detector CO2 vs Hidden Camera Detector FindSpy

The clearest difference is rating: Hidden Camera Detector FindSpy at 4.4 against Detector CO2's 2.0. Hidden Camera Detector FindSpy also leads on ratings volume (4.1K vs 1). Detector CO2's advantage is in-app purchases (none vs 13) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Hidden Camera Detector FindSpy sells 13 in-app purchases, starting at $4.99 per 7 days. Detector CO2 asks for nothing beyond the download.

Hidden Camera Detector FindSpy holds the better App Store score, 4.4 against 2.0. That said, the two scores are not equally well evidenced: Hidden Camera Detector FindSpy has 4.1K ratings behind it against 1, so its average is the more settled of the two.

Detector CO2 ships an update every 3 weeks, Hidden Camera Detector FindSpy every 4 weeks. The most recent releases landed on October 15, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Detector CO2 | Hidden Camera Detector FindSpy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/detector-co2/id1561126616/reviews) | **[4.4 (4.1K ratings)](https://appshunter.io/ios/app/hidden-camera-detector-findspy/id6469943309/reviews)** |
| Number of ratings | 1 | **4.1K** |
| Positive reviews | — | 24.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | **Free** | Subscription |
| Size | 9 MB | 184 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Geotap Games S.L.](https://appshunter.io/developer/596729068) | [Kain Suite Pte. Ltd.](https://appshunter.io/developer/1761133001) |

## What reviewers say

### Detector CO2

[App page](https://appshunter.io/ios/app/detector-co2/id1561126616)

Measure ambient CO2 levels using a compatible device. This utility app provides environmental data for your surroundings.

**Highlights:** Measure CO2 levels, Utilizes device capabilities, Environmental data display

**Features:** macOS Compatibility

**In-app purchases:** none


### Hidden Camera Detector FindSpy

[App page](https://appshunter.io/ios/app/hidden-camera-detector-findspy/id6469943309)

Detect hidden surveillance devices like cameras and listening tools in unfamiliar places. Protect your privacy in hotels, rentals, and public spaces using network, Bluetooth, magnetic field, and infrared scanning.

**Highlights:** Network Scan for cameras, Bluetooth Device Detection, Magnetic Field Analysis, Infrared Scanning, Privacy Protection Tool

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly $4.99 | $4.99 | per 7 days |
| Weekly Subscription | $5.99 | per 7 days |
| Weekly $6.99 | $6.99 | per 7 days |
| FindSpy Pro Weekly | $12.99 | per 7 days |
| FindSpy Pro Monthly | $12.99 | per month |
| Special Sale | $14.99 | per year |
| FindSpy Pro HalfYear | $29.99 | per 6 months |
| FindSpy Pro Annual | $39.99 | per year |
| Yearly Subscription | $49.99 | per year |
| 20 Credits | $4.99 | one-time |
| 50 Credits | $9.99 | one-time |
| 100 Credits | $12.99 | one-time |
| Lifetime | $49.99 | one-time |

**What reviewers like**

- 🚀 Efficient scanning
- 🔒 Helps detect hidden cameras
- 👍 Useful for Airbnb guests
- 👍 Works well enough

**What reviewers complain about**

- 🐛 Inconsistent readings
- 🐛 Doesn't detect known cameras
- 💰 Expensive subscription
- 💰 No free trial

**Reported bugs**

- Stuck on purchase screen
- Doesn't work as advertised
- Unreliable detection

**Requested features**

- Provide more details on detected devices
- Improve Bluetooth scanning accuracy


## Frequently asked questions

### Is Detector CO2 free?

Detector CO2 is free to download, with no in-app purchases.

### Is Hidden Camera Detector FindSpy free?

Hidden Camera Detector FindSpy is free to download, with in-app purchases available.

### Which has better reviews, Detector CO2 or Hidden Camera Detector FindSpy?

Hidden Camera Detector FindSpy is rated higher. Detector CO2 averages 2.0 out of 5 from 1 ratings, while Hidden Camera Detector FindSpy averages 4.4 from 4.1K ratings.

### Do Detector CO2 or Hidden Camera Detector FindSpy have ads?

Hidden Camera Detector FindSpy shows ads; Detector CO2 does not.

### Which is updated more often, Detector CO2 or Hidden Camera Detector FindSpy?

Detector CO2 ships an update every 3 weeks, and Hidden Camera Detector FindSpy every 4 weeks. Most recently, Detector CO2 was updated on October 15, 2026 and Hidden Camera Detector FindSpy on October 27, 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.*