Comparison

Rulix vs Smart Protractor & Angle Meter

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

Head to head
About

Rulix

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Rulix turns your phone into a professional measurement tool. Measure everything with 8 different tools. Free Tools: - Ruler — Precise length measurement with your screen - Level — Check surface tilt and alignment - Protractor — Measure angles in degrees - Compass — Find direction, see coordinates and altitude Premium Tools: - AR Measure — Measure real-world distances with your camera - Noise Meter — Measure ambient sound levels in decibels - Speedometer — Track your speed in real time with GPS - Vibration Meter — Analyze vibrations on X, Y, Z axes Features: - Measurement history — Save all your results - 8 languages — EN, TR, DE, ES, FR, IT, PT, RU - Dark theme — Professional eye-friendly design - Sound and haptic feedback

About

Smart Protractor & Angle Meter

Features
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SmartProtractor turns your iPhone into a professional angle-measurement toolkit. Whether you're a carpenter setting bevel cuts, an architect verifying site angles, a student solving geometry problems, or a DIY enthusiast leveling shelves and frames — get accurate readings in seconds, no extra hardware required. 4 MEASUREMENT MODES TOUCH PROTRACTOR Drag two colored handles to measure any angle on screen. Switch between 180° and full 360° modes. Enable snap-to-angle for instant exact values at 5°, 10°, 15°, 30°, and 45° increments. Lock any measurement to prevent accidental movement, then export a clean annotated diagram. CAMERA OVERLAY Overlay a live protractor on your camera feed. Aim at any object — a roof truss, door frame, staircase, or mountain ridge — and read the angle in real time. Pause to freeze the frame, fine-tune the arms, and save or share the annotated photo. PHOTO MEASUREMENT Import any photo from your library. The protractor overlays the image automatically, and you can drag it anywhere across the photo to place it exactly where you need. Adjust arms independently, pan and zoom the photo, then export the composite with the angle annotation included. POLYGON TRACING Tap anywhere to place polygon vertices and trace any irregular shape. All interior angles calculate in real time. Tap the first vertex to auto-close the shape and instantly verify the angle sum — triangle = 180°, quadrilateral = 360°, and so on. Load a photo or use the live camera as background to trace real-world objects directly on screen. LEVEL & INCLINOMETER Measure device pitch and roll with the precision of a digital spirit level. Calibrate to any surface, lock the reading, and switch between pitch and roll axes on a precision dial display. WHO USES SMARTPROTRACTOR • Carpenters — bevel angles, miter cuts, and corner joint verification • Architects — field angle checks against drawings and blueprints • Tile setters — irregular corner measurements before cutting • Students — geometry homework and theorem verification • Builders & DIYers — level shelves, frames, decks, and pictures MEASUREMENT FEATURES • Degrees, radians, and slope percentage • Snap-to-angle at 5°, 10°, 15°, 30°, and 45° increments • Lock mode to freeze any reading against accidental touch • Export & Share — save to Photos or send to any app • Copy angle value to clipboard • No ads · No subscriptions · Zero data collection

Screenshots

Smart Protractor & Angle Meter4 screens

Verdict

The call

The clearest difference is device support: Smart Protractor & Angle Meter at 2 against Rulix's —. On price, in-app purchases and iOS requirement 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. Rulix sells 4 in-app purchases, starting at $1.99 per month and Smart Protractor & Angle Meter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 5 level
Rulix versus Smart Protractor & Angle Meter: the parameters behind the verdict, then further details
ParameterRulixSmart Protractor & Angle Meter
PriceFreeFree
Update frequency—Every 6 weeks
Ads—No
In-app purchasesYesYes
Devices—iPhone, iPad — better
Requires iOS16 — better17.6
Further details — not scored
Size4 MB7 MB
Age rating4+4+
DeveloperHARUN CAN AYAZVladislav Zhirnov

In-app purchases

4 purchases

Rulix

Subscriptions4
  • Rulix Pro$1.991 Month
  • Rulix Pro3 Days trial$2.991 Month
  • Rulix Pro$9.991 Year
Show 1 more
  • Rulix Pro3 Days trial$14.991 Year
1 purchases

Smart Protractor & Angle Meter

One-time1
  • Full version$2.99

Questions

Is Rulix free?
Rulix is free to download, with in-app purchases available.
Is Smart Protractor & Angle Meter free?
Smart Protractor & Angle Meter is free to download, with in-app purchases available.

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