Comparison

Protractor Smart vs Wireless zoo

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

Head to head
About

Protractor Smart

This app acts as a smart instrument for measuring angles using your device's camera. It offers two free modes for measuring angles on screen or using a plumb bob for slopes, with an additional premium mode for polygon measurements.

Highlights
  • Camera-based angle measurement
  • Touch measure mode
  • Plumb bob measure for slopes
  • Polygon measurement (premium)
  • Screenshot functionality
Features
Read full description

Protractor - smart instrument to measure angles. Turn on the camera mode and measure the angle of buildings, mountains, or any other object around you. This app includes two free measuring modes: - Touch measure - touch the screen to set the angle (use camera view!). - Plumb bob measure - pendulum - use to determine the slope (remember to calibrate the plumb). In each mode, you can switch to camera view and take measurements of all objects around you. Additional Premium mode: Polygon measurement lets you draw any shape on your screen to check all its angles. Turn on the camera to see the real object through your phone and copy its shape. You can also pick a photo from your gallery or take a new picture to draw a shape on the image. In Premium mode, you can change colors, add helper lines, and switch between different angle units. All modes allows you to make a screenshot of anything on the screen. Enjoy !!!

About

Wireless zoo

Features
Read full description

WirelessZoo makes animal health monitoring effortless with wearable, non-invasive technology. Designed to work with ZooSense, a comfortable tail-mounted sensor, the app receives real-time health data via Bluetooth. Users can visualize vital signs directly on their phone and connect to the AlphaVetTech cloud for remote monitoring. With automatic pairing and seamless data streaming, WirelessZoo ensures that veterinarians and caregivers always have the insights they need for proactive animal care.

Screenshots

Protractor Smart4 screens
Wireless zoo3 screens

Verdict

The call

The clearest difference is in-app purchases: Wireless zoo at none against Protractor Smart's 1. Wireless zoo also leads on update cadence (every 10 months vs every 21 months). On price, ads, 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. Protractor Smart sells 1 one-off in-app purchase. Wireless zoo asks for nothing beyond the download.

UpkeepUpdate frequency

Protractor Smart ships an update every 21 months, Wireless zoo every 10 months. The most recent releases landed on November 11, 2026 and November 12, 2026 respectively.

Scorecard2 real differences · 8 level
Protractor Smart versus Wireless zoo: the parameters behind the verdict, then further details
ParameterProtractor SmartWireless zoo
PriceFreeFree
Rating4.6 (248 ratings) — better—
Positive reviews43.6% of reviews—
Number of ratings248 — better—
Update frequencyEvery 21 monthsEvery 10 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size11 MB32 MB
Age rating4+17+
DeveloperExaMobile S.A.Cloos Electronic

Bugs and requests

Protractor Smart

Reported bugs

8 issues
  • App loads indefinitely
  • App does not launch after iOS updates
  • Stuck on loading screen
  • Photo upload not possible in premium version
  • Upside-down protractor on iOS
Show 3 more
  • Phone locks during use
  • Camera mode is terrible and inaccurate
  • Poor calibration

Requested features

6 requests
  • Improve camera function (light, zoom)
  • Add automatic hold function
  • Increase digital readout size
  • Add more skins/cosmetics
  • Option to remove ads
Show 1 more
  • Fix upside-down protractor on iOS

Wireless zoo

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Protractor Smart

One-time1
  • AdBlock - Remove ads$1.99
None

Wireless zoo

No in-app purchases

Questions

Is Protractor Smart free?
Protractor Smart is free to download, with in-app purchases available.
Is Wireless zoo free?
Wireless zoo is free to download, with no in-app purchases.
Do Protractor Smart or Wireless zoo have ads?
Neither Protractor Smart nor Wireless zoo shows ads.
Which is updated more often, Protractor Smart or Wireless zoo?
Protractor Smart ships an update every 21 months, and Wireless zoo every 10 months. Most recently, Protractor Smart was updated on November 11, 2026 and Wireless zoo on November 12, 2026.

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