Comparison

CO2 sensor vs Stud Finder Wall Wood Detector

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
Features
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

Stud Finder Wall Wood Detector

This app transforms your iOS device into a stud finder, helping you locate studs, nails, and metal objects behind walls. It offers precise detection with coordinate tracking and customizable alerts for safe and accurate installations.

Highlights
  • Intuitive indicator for easy value reading
  • Precise location detection with X, Y, Z coordinates
  • Vibration and audible notifications
  • Adjustable sensitivity settings
  • Apple Watch support for wrist scanning
Features
Read full description

Discover Hidden Structures with Stud Finder Wall Wood Detector. Ever been frustrated by the guesswork of hanging a picture or mounting a shelf? Do you wish you had a reliable companion to locate studs, nails, and metal objects hidden behind your walls? Whether you're a DIY enthusiast, a professional contractor, or a cautious homeowner, Stud Finder Metal Detector is your go-to solution for precise, effortless stud detection. Powered by your iPhone's magnetic sensor and a user-friendly interface, Wall Wood Stud Finder transforms your iOS device into a powerful wall wood studfinder tool. Slide your phone slowly along the wall to find the screws and nails that hold the drywall to the studs, so you know where to drill. Key Features Easy Value Reading with an Intuitive Indicator Our clear, on-screen indicator displays real-time readings, allowing you to effortlessly interpret measurements. With a glance, see when you are over a screw, nail, or other metal object. (Premium subscription required.) Magnetic Field Reading on X, Y, Z Axes See the magnetic field and its X, Y, and Z components in real time to find the spot where the change is strongest. (Premium subscription required.) Vibration and Audible Notifications Stay alerted with customizable vibration and sound notifications. Whether you're in a noisy environment or focusing intently on your project, our notifications ensure you're always in sync with the app's findings. (Premium subscription required.) Adjustable Sensitivity Settings Tackle any project with confidence by fine-tuning the sensitivity of your scans. Whether dealing with thick walls or delicate surfaces, our customizable settings let you optimize detection for every scenario. (Premium subscription required.) Apple Watch Support Scan walls directly from your wrist. Get real-time haptic feedback and results without reaching for your phone—perfect when you're in tight spaces. (Premium subscription required.) Why Choose Stud Finder Metal Detector? Finds the Metal in Your Studs The app detects the screws and nails that hold your drywall to the studs through their magnetic field, showing you where the studs are before you make any holes in your walls. User-Friendly Interface Designed for both beginners and professionals, the app's sleek interface and intuitive controls make stud detection simple and effective. Real-time feedback and clear visual indicators guide you through every scan. Enhanced Project Safety With real-time readings and customizable alerts, you can confidently secure your wall-mounted items by targeting the strongest points behind your walls. Protect your investments and prevent unnecessary damage. Premium Subscription Required To access all scanning features—including the intuitive indicator, X/Y/Z magnetic field readings, vibration and audible notifications, and adjustable sensitivity settings—a premium subscription is required. Choose from flexible subscription plans that best suit your project needs, whether you're a weekend DIYer or a professional contractor. Get Started Today! Don't let uncertainty slow you down. With Stud Finder Metal Detector, you have the power to uncover hidden studs, nails, and metal objects with clear readings and reliable alerts. Transform your iOS device into an indispensable tool for safe, efficient, and professional installations. Download Stud Finder Metal Detector now and experience the future of wall scanning technology—backed by premium plans that unlock all of our advanced detection features. Privacy Policy: https://thestudfinder.app/privacy/ Terms of Use: https://thestudfinder.app/terms/ Contact Support: support@thestudfinder.app Take control of your home improvement projects—get Stud Finder Wall Wood Detector today and build with confidence!

Screenshots

CO2 sensor4 screens
Stud Finder Wall Wood Detector4 screens

Verdict

The call

The clearest difference is rating: Stud Finder Wall Wood Detector at 4.3 against CO2 sensor's 3.4. Stud Finder Wall Wood Detector also leads on update cadence (every 3 weeks vs every 12 months) and ratings volume (2.6K vs 7). CO2 sensor's advantage is in-app purchases (none vs 5) and iOS requirement (15.6 vs 17.0). On price, ads and device support 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. Stud Finder Wall Wood Detector sells 5 in-app purchases, starting at $7.99 per 7 days. CO2 sensor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Stud Finder Wall Wood Detector holds the better App Store score, 4.3 against 3.4. That said, the two scores are not equally well evidenced: Stud Finder Wall Wood Detector has 2.6K ratings behind it against 7, so its average is the more settled of the two.

UpkeepUpdate frequency

CO2 sensor ships an update every 12 months, Stud Finder Wall Wood Detector every 3 weeks. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
CO2 sensor versus Stud Finder Wall Wood Detector: the parameters behind the verdict, then further details
ParameterCO2 sensorStud Finder Wall Wood Detector
PriceFreeFree
Rating3.4 (7 ratings)4.3 (2.6K ratings) — better
Positive reviews—7.9% of reviews
Number of ratings72.6K — better
Update frequencyEvery 12 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, Apple Watch
Requires iOS15.6 — better17.0
Further details — not scored
Size0 MB34 MB
Age rating4+4+
DevelopersighmonAppcellent

Customer experience

CO2 sensor

All ratings7 ratings
Positive57.1%
Neutral28.6%
Negative14.3%

Stud Finder Wall Wood Detector

All ratings2,575 ratings
Positive81.4%
Neutral3.9%
Negative14.7%
Written reviews89 reviews
Positive7.9%
Neutral1.1%
Negative91.0%

Bugs and requests

CO2 sensor

Not enough reviews yet to summarise bugs or requests.

Stud Finder Wall Wood Detector

Reported bugs

3 issues
  • Doesn't work at all
  • Indicates finding studs then doesn't
  • Incompatible with walls where studs are visible

Requested features

1 request
  • Dark mode option

In-app purchases

None

CO2 sensor

No in-app purchases

5 purchases

Stud Finder Wall Wood Detector

Subscriptions5
  • Stud Finder Week$7.997 Days
  • Stud Finder Weekly with Trial3 Days trial$9.997 Days
  • Wall Wood Stud Finder Premium$14.991 Year
Show 2 more
  • Stud Finder Annual with Trial3 Days trial$29.991 Year
  • Stud Finder Annual$29.991 Year

Questions

Is CO2 sensor free?
CO2 sensor is free to download, with no in-app purchases.
Is Stud Finder Wall Wood Detector free?
Stud Finder Wall Wood Detector is free to download, with in-app purchases available.
Which has better reviews, CO2 sensor or Stud Finder Wall Wood Detector?
Stud Finder Wall Wood Detector is rated higher. CO2 sensor averages 3.4 out of 5 from 7 ratings, while Stud Finder Wall Wood Detector averages 4.3 from 2.6K ratings.
Do CO2 sensor or Stud Finder Wall Wood Detector have ads?
Neither CO2 sensor nor Stud Finder Wall Wood Detector shows ads.
Which is updated more often, CO2 sensor or Stud Finder Wall Wood Detector?
CO2 sensor ships an update every 12 months, and Stud Finder Wall Wood Detector every 3 weeks. Most recently, CO2 sensor was updated on October 24, 2026 and Stud Finder Wall Wood Detector on October 31, 2026.

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