Comparison

Protractor vs Digital Protractor & Level

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

Head to head
About

Protractor

Measure angles precisely using your phone's screen or camera. This intuitive tool allows you to adjust measurement lines and instantly see the angular difference. Ideal for professionals and hobbyists needing quick, accurate angle calculations.

Highlights
  • Angle measurement with adjustable lines
  • Camera integration for real-world measurements
  • Freeze function for static measurements
  • Clean and modern user interface
Features
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Screen Protractor is the precise, easy-to-use angle measurement tool that turns your iPhone into a digital protractor. Move two measurement lines anywhere on screen and instantly read the exact angle between them — down to the degree. MEASURE ANGLES ON ANY SURFACE Enable the built-in camera to use your live feed as a background. Hold your phone up to any object, surface, or corner and measure angles in real time without printing anything out or carrying a physical protractor. FREEZE & MEASURE Pause the camera image with the freeze function and take your time getting a precise angle reading on a still frame — perfect for moving objects or awkward angles. KEY FEATURES • Precision angle measurement between two draggable lines • Live camera background for measuring real-world angles • Freeze frame for accurate measurements on still images • Pan and zoom the measurement scale for fine-tuned readings • Clean, distraction-free interface PERFECT FOR Carpenters, builders, engineers, architects, designers, students, and anyone who needs a quick angle, slope, or degree measurement on the go. No registration. No ads. Just a reliable digital protractor in your pocket.

About

Digital Protractor & Level

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A protractor, bubble level, tape measure, ruler and room-planning toolkit in your pocket. Digital Protractor & Level brings 14 tools together with large readings, familiar instruments and a quick tool selector. Choose any tool as your default at launch. ANGLES & LEVELS • Protractor: read angles with a realistic dial and clear numerical display. • Level: a traditional bubble vial with a tilt reading. • 4 Corners: a bullseye surface level for tabletops and other flat surfaces. • Photo Angle: choose a photo and drag the corner and endpoints to measure an angle. • Camera Level: use on-screen alignment guides over the live camera. • Compass & Tilt: check direction and inclination. MEASURE & PLAN • Tape Measure: place a start and end point in augmented reality, with a bold measurement line and visible point markers. Chain segments, capture dimensions and save measurements with Expanded Toolkit. • Ruler: measure small objects against the screen, with calibration and metric or imperial units. • Height: mark a base and top to estimate vertical height. • Area: outline a flat surface to estimate its area. • Floor Plan: enter wall lengths or mark floor corners, then save and share a plan. • Room Layout: scan a room with LiDAR on a supported iPhone. Export USDZ, OBJ, SVG and JSON files to a computer for compatible 3D, drawing and rendering software. OBJ exports contain simplified geometry. • TV Sizer: preview a selected screen size on a wall. • Magnetic Field: view nearby magnetic field strength. QUICK ACCESS Switch tools from the Tools button, revisit recent tools, set your preferred startup tool, and organize saved measurements. Portrait and landscape layouts keep controls within reach. FREE & PAID ACCESS Use the basic Protractor, Level, Ruler and single-line Tape Measure free. Opening a tool preview is free; paid tools and actions show the available purchase options when you use them. Expanded Toolkit unlocks all paid features. Choose $1.99 per month, $4.99 every three months, or a $14.99 one-time lifetime purchase in the U.S. Prices vary by country and are shown before purchase. Monthly and three-month subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel subscriptions in your App Store account settings. Lifetime does not renew. Restore Purchases is available in the app. Existing Original Tools buyers keep the tools and features included in their original purchase. Expanded Toolkit is an optional upgrade for the additional tools. DEVICE & MEASUREMENT NOTES AR measurements are estimates and depend on lighting, surfaces and tracking. Room scanning requires a LiDAR-equipped iPhone. Camera Level displays virtual guides; it does not project a laser. Magnetic Field is not a dependable wire or stud detector. Photo angles can be affected by perspective. Check critical measurements with appropriate physical tools. No account or advertising. Photos, scans and saved measurements stay on your device unless you choose to share them. Camera access supports camera and AR tools; optional location access supports true north. Purchases and restores require internet access. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Protractor4 screens
Digital Protractor & Level4 screens

Verdict

The call

The clearest difference is in-app purchases: Protractor at none against Digital Protractor & Level's 1. Digital Protractor & Level's advantage is ads (none vs shown). On price, update cadence, device support 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. Digital Protractor & Level sells 1 one-off in-app purchase. Protractor asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on October 8, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 8 level
Protractor versus Digital Protractor & Level: the parameters behind the verdict, then further details
ParameterProtractorDigital Protractor & Level
PriceFreeFree
Rating3.9 (14 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings14 — better—
Update frequencyEvery 9 daysEvery 9 days
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.6 — better17.0
Further details — not scored
Size33 MB3 MB
Age rating4+4+
DeveloperJens RieckhofRobert Carpenter

In-app purchases

None

Protractor

No in-app purchases

1 purchases

Digital Protractor & Level

One-time1
  • Full Version$1.99

Questions

Is Protractor free?
Protractor is free to download, with no in-app purchases.
Is Digital Protractor & Level free?
Digital Protractor & Level is free to download, with in-app purchases available.
Do Protractor or Digital Protractor & Level have ads?
Protractor shows ads; Digital Protractor & Level does not.
Which is updated more often, Protractor or Digital Protractor & Level?
Protractor ships an update every 9 days, and Digital Protractor & Level every 9 days. Most recently, Protractor was updated on October 8, 2026 and Digital Protractor & Level on October 3, 2026.

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