Comparison

Angle Gradient Inclinometer vs AR Ruler

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

Head to head
About

Angle Gradient Inclinometer

Easily measure tilt angles with this free protractor app. It displays inclination from 0 to 359 degrees, along with gradient percentages and angles summing to 180 or 360 degrees. Switch to theodolite mode to set a specified angle to zero.

Highlights
  • Measure tilt angles 0-359 degrees
  • Display gradient percentage
  • Show sum angles (180/360)
  • Theodolite mode
  • Set specified angle to zero
Features
Read full description

Simple tilt angle protractor free application that can easily measure tilt simply by tilting the device. The angle of inclination measured from 0 degree to 359 degrees, converted gradient (%), angle at which sum is 180 degrees / 360 degrees are displayed at the same time. You can switch to the theodolite, the specified angle can be set to 0 degree. ( 45 Degrees = Gradient 100 % )

About

AR Ruler

This app uses your phone's camera and AR technology to measure distances, lengths, angles, areas, and volumes of real-world objects. It offers a variety of tools for quick and precise measurements, suitable for both home and professional use.

Highlights
  • AR technology for precise measurements
  • Measure length, height, distance, and angles
  • Calculate area, volume, and perimeters
  • Tools for various shapes (rectangles, circles, cubes)
  • Room measurement and wall adjustments
  • Home screen widgets for faster access
Features
Read full description

AR Ruler: Measuring tape with AR Technology The AR Ruler measurement app with measurement calculator uses advanced AR technology and your phone’s camera measuring tape system to deliver precise measurements of real-world objects. With this digital ruler, you can quickly perform a room measure, check height measure of walls, calculate length measure, and estimate distance, angles, area, volume, and more. Simply point your digital tape measure at any object using your smartphone and begin measuring instantly. The built-in 3D scanner detects surfaces and allows you to activate the AR tape measure tool with ease — making it a complete measurement calculator for both home and professional use. Key Tools Available in the AR Ruler App: Line & Height – Measure the length and height of objects quickly. Distance Meter – Measure distance from the device camera to a point on a 3D surface. Angle Tool – Measure angles directly on real surfaces. Polyline & Polyline Smooth – Calculate the total length of a drawn path. Rectangle Tool – Get length, perimeter, and area of rectangles. Circle Tool – Measure the radius, perimeter, and area of circular objects. Poly & Poly Smooth – Useful for measuring irregular shapes’ area and volume. Volume & Volume Smooth – Determine the volume of 3D structures or piles. Cube & Cylinder Tools – Fast measurement of these shapes’ dimensions. Walls & Curved Wall – Ideal for quick room measure and wall adjustments. Heap & Pit – Tools to measure the volume of material stacks or excavations. Access tools even faster via home screen widgets. Whether you're a DIY user, contractor, or interior designer, the AR Ruler app transforms your smartphone into a powerful camera measuring tape and measurement calculator. Try AR Ruler app now – we’d love to hear your feedback! Customer Support: Should you have any questions about AR Ruler app or need help, please do not hesitate to contact us via developer email: support@grymalaltd.com. Follow us: Twitter: https://twitter.com/grymalaofficial Instagram: https://www.instagram.com/grymala_official/ Pinterest: https://www.pinterest.com/grymalaapps/ LinkedIn: https://www.linkedin.com/company/grymala/ Subscription: --------------- Premium - 3 days free trial • No ads; • Unlimited number of projects; • Unlimited Access to Premium Tools. Price may vary by country. You won’t be charged if you cancel at least 24 hours before the end of trial period. Active subscription will automatically renew unless canceled at least 24 hours before the end of the current active period (year). You can manage subscriptions in your iTunes Account Settings. Subscription is charged to your credit card through your iTunes account. --- Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy:https://www.grymalaltd.com/policy-new.html

Screenshots

Angle Gradient Inclinometer1 screens
AR Ruler4 screens

Verdict

The call

The clearest difference is in-app purchases: Angle Gradient Inclinometer at none against AR Ruler's 13. Angle Gradient Inclinometer also leads on review sentiment (51% vs 36%) and iOS requirement (13 vs 16.0). AR Ruler's advantage is update cadence (every 3 weeks vs every 8 months) and rating (4.6 vs 4.3). 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. AR Ruler sells 11 in-app purchases, starting at $4.99 per 7 days. Angle Gradient Inclinometer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

AR Ruler holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 314 and 975 respectively. Written reviews complicate that: 51% of Angle Gradient Inclinometer's written reviews are positive against 36% of AR Ruler's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Angle Gradient Inclinometer ships an update every 8 months, AR Ruler every 3 weeks. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard7 real differences · 3 level
Angle Gradient Inclinometer versus AR Ruler: the parameters behind the verdict, then further details
ParameterAngle Gradient InclinometerAR Ruler
PriceFreeFree
Rating4.3 (314 ratings)4.6 (975 ratings) — better
Positive reviews51.1% of reviews — better35.7% of reviews
Number of ratings314975 — better
Update frequencyEvery 8 monthsEvery 3 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFreemium
DevicesiPhone, iPodiPhone, iPad
Requires iOS13 — better16.0
Further details — not scored
Size11 MB397 MB
Age rating4+4+
DeveloperSHIGETO TAKAGIGrymala sp. z o.o.

Customer experience

Angle Gradient Inclinometer

All ratings295 ratings
Positive83.7%
Neutral4.1%
Negative12.2%
Written reviews45 reviews
Positive51.1%
Neutral15.6%
Negative33.3%

AR Ruler

All ratings975 ratings
Positive91.2%
Neutral3.1%
Negative5.7%
Written reviews84 reviews
Positive35.7%
Neutral4.8%
Negative59.5%

Bugs and requests

Angle Gradient Inclinometer

Not enough reviews yet to summarise bugs or requests.

AR Ruler

Reported bugs

3 issues
  • Freezes on launch
  • Measurement errors
  • Incompatibility with newer devices

Requested features

3 requests
  • Free trial version
  • One-time purchase option
  • Improved accuracy for larger areas

In-app purchases

None

Angle Gradient Inclinometer

No in-app purchases

11 purchases

AR Ruler

Subscriptions10
  • AR Ruler Weekly$4.997 Days
  • AR Ruler Weekly3 Days trial$12.997 Days
  • Premium3 Days trial$19.997 Days
Show 7 more
  • AR Ruler Monthly3 Days trial$19.991 Month
  • AR Ruler Monthly2 variants$19.991 Month
  • Special Annual Subscription3 Days trial$44.991 Year
  • Three-month AR Ruler3 Days trial$49.993 Months
  • Annual AR Ruler3 Days trial$69.991 Year
  • Premium3 Days trial$89.991 Year
  • Annual AR Ruler3 Days trial2 variants$89.991 Year
One-time1
  • Remove ads$7.99

Questions

Is Angle Gradient Inclinometer free?
Angle Gradient Inclinometer is free to download, with no in-app purchases.
Is AR Ruler free?
AR Ruler is free to download, with in-app purchases available.
Which has better reviews, Angle Gradient Inclinometer or AR Ruler?
AR Ruler is rated higher. Angle Gradient Inclinometer averages 4.3 out of 5 from 314 ratings, while AR Ruler averages 4.6 from 975 ratings.
Do Angle Gradient Inclinometer or AR Ruler have ads?
Both Angle Gradient Inclinometer and AR Ruler show ads.
Which is updated more often, Angle Gradient Inclinometer or AR Ruler?
Angle Gradient Inclinometer ships an update every 8 months, and AR Ruler every 3 weeks. Most recently, Angle Gradient Inclinometer was updated on October 26, 2026 and AR Ruler on October 27, 2026.

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