Comparison

Protractor Edge vs Clinometer+

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

Head to head
About

Protractor Edge

Measure angles directly on your device without taking photos or placing the angle on screen. This app offers a unique and efficient way to determine degrees, saving you time with its handy assistant functionality.

Highlights
  • Direct angle measurement on device
  • Intuitive line dragging interface
  • Measures angles in photos (Premium)
  • Measures from camera view (Premium)
  • Ad-free experience (Premium)
Features
Read full description

A simple protractor. Just put your device on the angle you want to measure. Then drag the two lines to align the both sides of the angle. The degrees will be there. It is different from other protractor apps. This is a new way to measure angles. It requires neither taking photo nor putting the angle above the screen. Now start using this handy assistant to measure angles which will save you a lot of time. ------------------------------------- PREMIUM ACCESS SUBSCRIPTION - Measure the world from camera - Measure angles in photos - No Ads - The subscription is $0.99 yearly with trial - 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 - 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 a free trial period, if offered, will be forfeited when the user purchases a subscription to that service, where applicable - Terms of use: https://service.notationpad.com/terms_service.html

About

Clinometer+

This utility app functions as a car inclinometer to help drivers understand road conditions for safer driving. It requires a car phone holder and offers a calibration feature for accurate readings on flat surfaces.

Highlights
  • Car inclinometer
  • Road condition analysis
  • Safe driving aid
  • Calibration feature
  • Easy to use
Features
Read full description

Note: You will need a car phone holder to use with this app. This app helps you to understand road conditions to ensure safe driving. It is easy to use, simply put your phone on a holder and stick it to your car and you are ready to go. The app provides a calibrate button to adjust the readings when your car is on a flat surface.

Screenshots

Protractor Edge2 screens
Clinometer+3 screens

Verdict

The call

The clearest difference is ads: Clinometer+ at none against Protractor Edge's shown. Clinometer+ also leads on update cadence (every 2 months vs every 43 months) and ratings volume (1K vs 55). Protractor Edge's advantage is review sentiment (70% vs 48%) and iOS requirement (9.0 vs 17.6). On price, rating, in-app purchases and monetization model 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 Edge sells 2 in-app purchases, starting at $1.99 per year and Clinometer+ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Protractor Edge against 4.5 for Clinometer+. That said, the two scores are not equally well evidenced: Clinometer+ has 1K ratings behind it against 55, so its average is the more settled of the two. Written reviews are what separate them: 70% of Protractor Edge's written reviews are positive against 48% of Clinometer+'s.

UpkeepUpdate frequency

Protractor Edge ships an update every 43 months, Clinometer+ every 2 months. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 5 level
Protractor Edge versus Clinometer+: the parameters behind the verdict, then further details
ParameterProtractor EdgeClinometer+
PriceFreeFree
Rating4.5 (55 ratings)4.5 (1K ratings)
Positive reviews69.6% of reviews — better48.1% of reviews
Number of ratings551K — better
Update frequencyEvery 43 monthsEvery 2 months — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better17.6
Further details — not scored
Size21 MB16 MB
Age rating4+4+
Developer嵩 张Tue Nguyen Minh

Customer experience

Protractor Edge

All ratings55 ratings
Positive85.5%
Neutral5.5%
Negative9.1%
Written reviews46 reviews
Positive69.6%
Neutral8.7%
Negative21.7%

Clinometer+

All ratings1,017 ratings
Positive88.8%
Neutral4.5%
Negative6.7%
Written reviews27 reviews
Positive48.1%
Neutral3.7%
Negative48.1%

Bugs and requests

Protractor Edge

Not enough reviews yet to summarise bugs or requests.

Clinometer+

Reported bugs

2 issues
  • Gave child a virus that searched for pornography
  • Doesn't function at all

Requested features

2 requests
  • Ability to mount at any angle and calibrate
  • Dampened response speed

In-app purchases

2 purchases

Protractor Edge

Subscriptions1
  • Premium Access7 Days trial$1.991 Year
One-time1
  • Remove Ads$0.99
1 purchases

Clinometer+

One-time1
  • Pro Features$1.99

Questions

Is Protractor Edge free?
Protractor Edge is free to download, with in-app purchases available.
Is Clinometer+ free?
Clinometer+ is free to download, with in-app purchases available.
Which has better reviews, Protractor Edge or Clinometer+?
Protractor Edge and Clinometer+ are both rated 4.5 out of 5 on the App Store, from 55 and 1K ratings respectively.
Do Protractor Edge or Clinometer+ have ads?
Protractor Edge shows ads; Clinometer+ does not.
Which is updated more often, Protractor Edge or Clinometer+?
Protractor Edge ships an update every 43 months, and Clinometer+ every 2 months. Most recently, Protractor Edge was updated on October 11, 2026 and Clinometer+ on October 13, 2026.

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