Comparison

Angle Meter vs Protractor

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

Head to head
About

Angle Meter

Features
Read full description

The MTS Angle Meter is a high-precision digital inclinometer designed for RC pilots who need accurate model setup and fast, reliable angle readings. Connect up to 4 Angle Measurement Units and view Roll and Pitch readings in one place, making it easy to compare wings, tailplanes, motor thrust lines, and incidence settings directly between units. Ideal for precise RC aircraft setup, trimming, and repeatable workshop measurements.

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 โ€” 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 โ€” 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

Screenshots

Angle Meter3 screens
Protractor4 screens

Verdict

The call

The clearest difference is in-app purchases: Angle Meter at none against Protractor's 3. Angle Meter also leads on update cadence (fortnightly vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Protractor sells 3 in-app purchases, starting at $4.99 per 7 days. Angle Meter asks for nothing beyond the download.

UpkeepUpdate frequency

Angle Meter ships an update fortnightly, Protractor every 6 weeks. The most recent releases landed on September 19, 2026 and September 24, 2026 respectively.

Scorecard2 real differences ยท 4 level
Angle Meter versus Protractor: the parameters behind the verdict, then further details
ParameterAngle MeterProtractor
PriceFreeFree
Update frequencyFortnightly โ€” betterEvery 6 weeks
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS17.017.0
Further details โ€” not scored
Size4 MB5 MB
Age rating4+4+
DeveloperRichard HirstPhuc Pham

In-app purchases

None

Angle Meter

No 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

Questions

Is Angle Meter free?
Angle Meter is free to download, with no in-app purchases.
Is Protractor free?
Protractor is free to download, with in-app purchases available.
Do Angle Meter or Protractor have ads?
Neither Angle Meter nor Protractor shows ads.
Which is updated more often, Angle Meter or Protractor?
Angle Meter ships an update fortnightly, and Protractor every 6 weeks. Most recently, Angle Meter was updated on September 19, 2026 and Protractor on September 24, 2026.

Other comparisons