Comparison

SpyTracker vs CO2 sensor

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

Head to head
About

SpyTracker

Optimize your WiFi by finding the best channel and location for your router. Detect all devices connected to your network and identify nearby WiFi signals. Test your phone's ping and troubleshoot network issues for improved performance.

Highlights
  • Scan all connected devices
  • Best WiFi channel recommendation
  • Copy MAC addresses
  • Test phone ping
  • Detect nearby WiFi
Features
Read full description

Have you also encountered a high Ping when playing games? SpyTracker recommends the best channel and place for your router, get the best out of your WiFi! SpyTracker will helps you test your Ping! SpyTracker gives the most important information about your network, shows all connected devices and any WiFi around you! SpyTracker gives you the most useful optimization information to help decrease interference! Helps to quickly detecting any computer network problems, ip address detection and boosting network performance. Features: - Scan all devices on your network - Best channel recommendation - Copy MAC address - Check your Phone's Ping You may purchase an auto-renewing subscription to get Pro Access. Good to know: The payment will be charged to your iTunes Account when you confirm the purchase. The subscription automatically renews for the same price and duration period depend on the selected plan (weekly, monthly, half-annual or annual) unless canceled at least 24-hours before the end of the current period. Subscription automatically renews unless canceled at least 24-hours before the end of the current period. You can disable the automatic renewal function at any time by adjusting your account settings. Next subscriptions available: • 1-month subscription - Monthly Pro Access – from US$ 8.99 - Price may change depending on your country Privacy policy: https://sites.google.com/view/wifi-assistpop/home Terms of use: https://sites.google.com/view/wifi-assisttou/home

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

Screenshots

SpyTracker4 screens
CO2 sensor4 screens

Verdict

The call

The clearest difference is rating: SpyTracker at 4.5 against CO2 sensor's 2.7. SpyTracker also leads on update cadence (every 3 weeks vs every 18 months) and ratings volume (808 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SpyTracker sells 2 in-app purchases, starting at $7.99 per 7 days. CO2 sensor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SpyTracker holds the better App Store score, 4.5 against 2.7. That said, the two scores are not equally well evidenced: SpyTracker has 808 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

SpyTracker ships an update every 3 weeks, CO2 sensor every 18 months. The most recent releases landed on September 28, 2026 and September 16, 2026 respectively.

Scorecard7 real differences · 3 level
SpyTracker versus CO2 sensor: the parameters behind the verdict, then further details
ParameterSpyTrackerCO2 sensor
PriceFreeFree
Rating4.5 (808 ratings) — better2.7 (3 ratings)
Positive reviews19.2% of reviews—
Number of ratings808 — better3
Update frequencyEvery 3 weeks — betterEvery 18 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.4 — better15.6
Further details — not scored
Size14 MB0 MB
Age rating4+4+
Developer晶晶 饶sighmon

Customer experience

SpyTracker

All ratings808 ratings
Positive86.1%
Neutral5.0%
Negative8.9%
Written reviews52 reviews
Positive19.2%
Neutral3.8%
Negative76.9%

CO2 sensor

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

Bugs and requests

SpyTracker

Reported bugs

3 issues
  • Subscription issues
  • Tracking failures
  • Compatibility problems

Requested features

4 requests
  • Detailed device information
  • Ability to identify device owners
  • Improved free version functionality
  • Better customer support

CO2 sensor

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

SpyTracker

Subscriptions2
  • SpyPoint Premium Week$7.997 Days
  • WiFi Assist Premium$8.991 Month
None

CO2 sensor

No in-app purchases

Questions

Is SpyTracker free?
SpyTracker is free to download, with in-app purchases available.
Is CO2 sensor free?
CO2 sensor is free to download, with no in-app purchases.
Which has better reviews, SpyTracker or CO2 sensor?
SpyTracker is rated higher. SpyTracker averages 4.5 out of 5 from 808 ratings, while CO2 sensor averages 2.7 from 3 ratings.
Do SpyTracker or CO2 sensor have ads?
Neither SpyTracker nor CO2 sensor shows ads.
Which is updated more often, SpyTracker or CO2 sensor?
SpyTracker ships an update every 3 weeks, and CO2 sensor every 18 months. Most recently, SpyTracker was updated on September 28, 2026 and CO2 sensor on September 16, 2026.

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