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Screenshots

  • Protractor: Angle Finder screenshot 1
  • Protractor: Angle Finder screenshot 2
  • Protractor: Angle Finder screenshot 3
  • Protractor: Angle Finder screenshot 4

About Protractor: Angle Finder

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 [email protected]

What’s new

Version 1.1.1 · Updated August 21, 2026

Bug fixes and performance improvements.

App privacy

The developer, Phuc Pham, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

Alternatives to Protractor: Angle Finder

Looking for apps like Protractor: Angle Finder? Here are 6 similar apps on the App Store. The highest rated is Angle Finder: Level Tool (4.7/5), and all 6 are free to download.

Protractor: Angle Finder vs. alternatives
App Rating Price Last updated Compare
Protractor: Angle Finder – Free August 21, 2026
Smart Protractor & Angle Meter – Free Apr 28, 2026 Compare
Protractor Angle Meter 4.5 / 5 (2) Free Oct 17, 2026 Compare
AngleAR – Free Jul 28, 2026 Compare
Protractor - Angle Measure 4.0 / 5 (15) Free Sep 15, 2026 Compare
Protractor Angle Measure Tool 4.4 / 5 (178) Free Oct 10, 2026 Compare
Angle Finder: Level Tool 4.7 / 5 (169) Free Aug 29, 2026 Compare

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