Comparison

CO2 sensor vs Hidden Camera Detector FindSpy

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CO2 sensor

Monitor CO2, temperature, and humidity levels in real-time using a Bluetooth sensor. Save readings with location data and sync them across Apple devices via iCloud. View historical data on a map.

Highlights
  • Real-time CO2, temperature, and humidity readings
  • Bluetooth sensor integration
  • Save readings with location
  • iCloud sync across devices
  • Map view of saved readings
  • Open source code available
Read full description

Read CO2, temperature, and humidity from your Bluetooth Sensirion SCD-41 sensor in realtime. Save your readings with your current location and have it sync across your devices via iCloud. See previously saved readings with a map of the location that those readings were taken. Works across iPhone, iPad, and macOS devices. Open source code: https://github.com/sighmon/ios-ble-co2-sensor

About

Hidden Camera Detector FindSpy

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
Read full description

Protect your privacy and stay secure with the Camera Detector app. This app allows you to detect suspicious surveillance devices—such as unauthorized cameras, audio bugs, listening tools, or other covert equipment—in hotels, Airbnbs, vacation rentals, shared spaces, or any place that feels unfamiliar. Ideal for travelers, renters, and anyone who values peace of mind, this tool empowers you to take control of your personal security—anytime, anywhere. NETWORK SCAN: >>> Connect to a Wi-Fi network. >>> Activate Network Scan. >>> Unearth unauthorized cameras through detected network devices. BLUETOOTH DETECTION >>> Enable Bluetooth on your device. >>> Launch the app and enable Bluetooth Detection. >>> Locate nearby suspicious devices using Bluetooth signals. MAGNETIC FIELD ANALYSIS >>> Harness your phone's magnetic sensor. >>> Start Magnetic Field Analysis. >>> Detect unauthorized surveillance tools like microphones, speakers, or cameras based on magnetic fields. INFRARED SCANNING >>> Activate Infrared Scanning. >>> Identify suspicious devices emitting infrared signals, even in low-light environments. Disclaimer: This app is designed to assist users in detecting potentially suspicious surveillance devices using the available sensors on their phones (such as Bluetooth and Wi-Fi scanning). However, it does not guarantee complete accuracy in detection. Users are encouraged to remain vigilant and consider using additional inspection methods. The developer assumes no liability for any damages, losses, or consequences resulting from reliance on the app alone. SUBSCRIPTION PLANS: | Weekly Access | Monthly Access | Yearly Access Information about the auto-renewal of subscription: - Payment will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. - Account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal. The cost depends on the selected plan. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of the free trial will be forfeited when the user purchases a subscription. Privacy Policy: https://kainsuite.com/privacy-policy/ Terms of Service https://kainsuite.com/terms-conditions/

Screenshots

CO2 sensor4 screens
Hidden Camera Detector FindSpy4 screens

Verdict

The call

The clearest difference is rating: Hidden Camera Detector FindSpy at 4.4 against CO2 sensor's 2.7. Hidden Camera Detector FindSpy also leads on update cadence (every 4 weeks vs every 18 months) and ratings volume (4.1K vs 3). CO2 sensor's advantage is in-app purchases (none vs 13) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Hidden Camera Detector FindSpy holds the better App Store score, 4.4 against 2.7. That said, the two scores are not equally well evidenced: Hidden Camera Detector FindSpy has 4.1K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

CO2 sensor ships an update every 18 months, Hidden Camera Detector FindSpy every 4 weeks. The most recent releases landed on September 16, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 4 level
CO2 sensor versus Hidden Camera Detector FindSpy: the parameters behind the verdict, then further details
ParameterCO2 sensorHidden Camera Detector FindSpy
PriceFreeFree
Rating2.7 (3 ratings)4.4 (4.1K ratings) — better
Positive reviews—24.7% of reviews
Number of ratings34.1K — better
Update frequencyEvery 18 monthsEvery 4 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size0 MB184 MB
Age rating4+9+
DevelopersighmonKain Suite Pte. Ltd.

Customer experience

CO2 sensor

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%

Hidden Camera Detector FindSpy

All ratings4,057 ratings
Positive84.9%
Neutral4.5%
Negative10.6%
Written reviews170 reviews
Positive24.7%
Neutral3.5%
Negative71.8%

Bugs and requests

CO2 sensor

Not enough reviews yet to summarise bugs or requests.

Hidden Camera Detector FindSpy

Reported bugs

3 issues
  • Stuck on purchase screen
  • Doesn't work as advertised
  • Unreliable detection

Requested features

2 requests
  • Provide more details on detected devices
  • Improve Bluetooth scanning accuracy

In-app purchases

None

CO2 sensor

No in-app purchases

13 purchases

Hidden Camera Detector FindSpy

Subscriptions9
  • Weekly $4.99$4.997 Days
  • Weekly Subscription$5.997 Days
  • Weekly $6.99$6.997 Days
Show 6 more
  • FindSpy Pro Weekly$12.997 Days
  • FindSpy Pro Monthly$12.991 Month
  • Special Sale$14.991 Year
  • FindSpy Pro HalfYear$29.996 Months
  • FindSpy Pro Annual$39.991 Year
  • Yearly Subscription$49.991 Year
One-time4
  • 20 Credits$4.99
  • 50 Credits$9.99
  • 100 Credits$12.99
Show 1 more
  • Lifetime$49.99

Questions

Is CO2 sensor free?
CO2 sensor 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, CO2 sensor or Hidden Camera Detector FindSpy?
Hidden Camera Detector FindSpy is rated higher. CO2 sensor averages 2.7 out of 5 from 3 ratings, while Hidden Camera Detector FindSpy averages 4.4 from 4.1K ratings.
Do CO2 sensor or Hidden Camera Detector FindSpy have ads?
Hidden Camera Detector FindSpy shows ads; CO2 sensor does not.
Which is updated more often, CO2 sensor or Hidden Camera Detector FindSpy?
CO2 sensor ships an update every 18 months, and Hidden Camera Detector FindSpy every 4 weeks. Most recently, CO2 sensor was updated on September 16, 2026 and Hidden Camera Detector FindSpy on September 22, 2026.

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