Comparison

Protractor vs Angle Meter

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

Head to head
About

Protractor

Features
Read full description

PAID ACCESS REQUIRED Protractor is a paid app. A weekly or yearly auto-renewable subscription, or a one-time lifetime purchase, is required to use every feature after onboarding. There is no free version and no free trial. Measure any angle without a physical protractor. Drag two arms across the screen, aim the camera at a real object, or rest your phone on a slope and read the tilt live. Most angle apps give you one trick. Protractor gives you three measuring surfaces in one app — an on-screen protractor for photos and drawings, a see-through camera overlay for real objects, and a motion-sensor inclinometer for surfaces you can put your phone on. Every reading comes out in degrees, radians or percent grade, and roof work gets the rise-in-12 pitch on the same screen. WHAT YOU GET - Read the exact degree of any corner on a photo or drawing by dragging two arms and the vertex onto it - Point the camera at a wall, ramp, roof edge or shelf and measure the angle right on the live view - Turn your phone into a digital level that shows pitch, roll, percent grade and roof pitch as rise:12 at once - Lock a reading with Hold or Freeze so the number stays put while you climb down or move the phone - Keep every measurement in History with a photo thumbnail, plus your saved count, average and widest angle - Switch between degrees, radians and grade in one tap, with a built-in conversion table for common values PERFECT FOR - DIY and home projects: shelves, picture rails, ramps, furniture - Roofing, decking and construction: slope, grade and pitch checks - Woodworking and metalwork: bevels, miters and corner angles - Students and teachers measuring angles on diagrams and photos WHY NOT JUST USE A PLASTIC PROTRACTOR A plastic protractor only works on paper, only reads what fits inside its arc, and is never in your pocket when the roof needs checking. This one measures on a photo, through the camera, or straight off a surface — and it remembers every reading instead of you writing them on a scrap of wood. PRIVACY Everything is measured and stored on your device. No account, no sign-up, no cloud upload of your photos or readings. The camera feed is used only to draw the protractor on top of it, and the app works with no internet connection. FULL ACCESS Full access unlocks the camera protractor, the live inclinometer, saved measurement history and all angle units. It is offered as a weekly subscription, a yearly subscription, or a one-time lifetime purchase. Your exact plan and price are shown before you confirm, and subscriptions renew until cancelled in your App Store settings. Open Protractor, point it at the next angle you need, and get the number in seconds. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? Email tphuc.work@gmail.com

About

Angle Meter

Features
Read full description

Angle Meter measures and records the actual angle of any surface — not just whether it's level. ā–  Use it when • Hanging a shelf and checking the tilt • Leveling a picture frame • Checking a staircase or ramp slope • Any DIY project that needs a precise angle ā–  What it does • Real-time angle display using your device's gyroscope/accelerometer • Set a baseline to zero out any surface, even an uneven floor or wall • AR mode overlays the angle line directly on the camera view • Save angle + timestamp records to review later ā–  Free and Pro Free: live angle reading, baseline, and up to 3 saved records. Pro (one-time purchase, no subscription): AR mode, unlimited records, and no ads. Note: readings are estimates only and are not a substitute for precision instruments. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hecuhecu.github.io/apps/angle-meter/privacy/

Screenshots

Protractor4 screens
Angle Meter4 screens

Verdict

The call

The clearest difference is ads: Protractor at none against Angle Meter's shown. Angle Meter's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Protractor sells 3 in-app purchases, starting at $4.99 per 7 days and Angle Meter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Protractor ships an update every 6 weeks, Angle Meter every 3 weeks. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Protractor versus Angle Meter: the parameters behind the verdict, then further details
ParameterProtractorAngle Meter
PriceFreeFree
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size5 MB40 MB
Age rating4+4+
DeveloperPhuc Phamhiroki kawamura

In-app purchases

3 purchases

Protractor

Subscriptions2
  • Incline Gauge Weekly$4.997 Days
  • Roof Pitch Yearly$24.991 Year
One-time1
  • Bevel & Degree, Pay Once$49.99
1 purchases

Angle Meter

One-time1
  • Unlock Premium (Angle Meter)$17.99

Questions

Is Protractor free?
Protractor is free to download, with in-app purchases available.
Is Angle Meter free?
Angle Meter is free to download, with in-app purchases available.
Do Protractor or Angle Meter have ads?
Angle Meter shows ads; Protractor does not.
Which is updated more often, Protractor or Angle Meter?
Protractor ships an update every 6 weeks, and Angle Meter every 3 weeks. Most recently, Protractor was updated on October 30, 2026 and Angle Meter on October 28, 2026.

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