CO2 sensor vs Find Hidden
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Find Hidden
This app helps you detect suspicious electronic devices on your network. It scans your environment in real-time to identify connected devices, distinguishing between safe and potentially hidden ones. Protect your privacy in new locations or while traveling.
- Detect suspicious peripherals
- Inspect spy device information
- Scan all connected electronic devices
- Real-time network updates
- Distinguish safe and suspicious devices
- Anti sneak shot guide
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Find Hidden aids you to find out suspicious peripherals and inspect the details information for spy devices. Detect all electronic devices in the network environment, updating in real-time as you move around so as to protect your privacy and security when you move to a new home, travel on business, or go on honeymoon. Key Features: Displays all connected devices. Wi-Fi Device Inspection for discovering lost devices. Distinguish both safe devices and suspicious devices. Anti sneak shot guide and simplicity of operator. Subscription Information: There are two types of subscriptions to Inspector Eye Premium. The duration of the subscription can be a year: $13.99 or a lifetime: $16.99 - Payments will be credited to your iTunes account upon confirmation of purchase. - Subscription automatically renews if automatic renewal is not turned off at least 24 hours before the end of the current period. - Accounts will be charged for renewal within 24 hours before the end of the current period and determine the cost of renewal. - Subscriptions can be managed by the user, and automatic updating can be disabled by going to the user account settings after purchasing Terms of Use: https://sites.google.com/view/inspectoreyetou/home Privacy Policy: https://sites.google.com/view/inspectoreyepp/home
Screenshots
Verdict
The clearest difference is rating: Find Hidden at 4.4 against CO2 sensor's 2.7. Find Hidden also leads on update cadence (monthly vs every 18 months) and ratings volume (341 vs 3). CO2 sensor's advantage is in-app purchases (none vs 2) and device support (4 vs 2). On price and ads 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
Both are free to download. Find Hidden sells 2 in-app purchases, starting at $9.99 per month. CO2 sensor asks for nothing beyond the download.
Find Hidden holds the better App Store score, 4.4 against 2.7. That said, the two scores are not equally well evidenced: Find Hidden has 341 ratings behind it against 3, so its average is the more settled of the two.
CO2 sensor ships an update every 18 months, Find Hidden monthly. The most recent releases landed on September 16, 2026 and September 25, 2026 respectively.
| Parameter | CO2 sensor | Find Hidden |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (3 ratings) | 4.4 (341 ratings) — better |
| Positive reviews | — | 26.1% of reviews |
| Number of ratings | 3 | 341 — better |
| Update frequency | Every 18 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPod |
| Requires iOS | 15.6 | 13.4 — better |
| Further details — not scored | ||
| Size | 0 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | sighmon | 安帮 潘 |
Customer experience
CO2 sensor
Find Hidden
Bugs and requests
CO2 sensor
Not enough reviews yet to summarise bugs or requests.
Find Hidden
Reported bugs
4 issues- App closes when clicking ping details
- Inaccurate device counts (fluctuates)
- Doesn't show location
- Shows only IP numbers
Requested features
7 requests- Precise location of the object
- Application in Spanish
- Clearer defined mapping
- Free for those with stalkers
- Check for wireless IPs (free alternative)
Show 2 moreShow fewer
- Show where the device is
- Show when the device was hooked up
In-app purchases
CO2 sensor
No in-app purchases
Find Hidden
- Hidden Inspector Pro Month$9.991 Month
- Find Hidden Premium Year$14.991 Year
Questions
Is CO2 sensor free?
Is Find Hidden free?
Which has better reviews, CO2 sensor or Find Hidden?
Do CO2 sensor or Find Hidden have ads?
Which is updated more often, CO2 sensor or Find Hidden?
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