Protractor Smart app icon

Apps Like Protractor Smart for iPhone and iPad

Measure angles with camera and touch

Measure angles using camera view with touch or plumb bob methods. Set angles on screen or through camera. Switch between measurement modes. Access advanced polygon measurement in premium version. Calibrate plumb bob for accurate slope readings.

by ExaMobile S.A.★ 4.6243 ratingsUtilitiesFreeData updated 2026-09-10

Protractor Smart screenshots

Ranked alternatives

Showing 161–180 of 1,000 ranked alternatives.

  1. dB meter - noise measure app icon

    dB meter - noise measure

    Anna Koynova

    Sound levels and graph histograms

    Sound levels with SPL metrics including current average, peak, average maximum, and absolute maximum. Display graph histograms for level changes. Save measurements and reset maximum values by tapping. Support upside down orientation for easy use.

    ★ 4.6641 ratingsUtilities$2.99Data updated 2026-09-11
  2. BuildersCalcsRoof app icon

    BuildersCalcsRoof

    Robert Thompson

    Calculate roof angles and pitches

    Calculate rafter, hip, and jack rafter lengths with precise angle cuts and birdsmouth dimensions. Input roof dimensions for instant results. Guide users in cutting roof components accurately without trial and error.

    ★ 2.48 ratingsUtilities$2.99Data updated 2026-09-08
  3. Distance Measure app icon

    Distance Measure

    Robin Betjes

    Between waypoints

    Distances between waypoints or calculate surface areas using map polygons. Set waypoints by tapping and holding. Choose units like kilometers, miles, or nautical miles. Access settings to change map type or view the manual.

    ★ 4.3239 ratingsUtilitiesFreeData updated 2026-09-08
  1. Libre Light Sensor app icon

    Libre Light Sensor

    John Harrington

    Measure and track lux levels

    Measure levels using iPhone camera to calculate luminosity in Lux. Track exposure during waking hours and before bed. Help optimize sleep quality by monitoring ambient conditions.

    ★ 4.8134 ratingsUtilitiesFreeData updated 2026-09-06
  2. AiRuler - AR for Measurement app icon

    AiRuler - AR for Measurement

    BHI Technologies, Inc.

    Measure objects with AR camera

    Use camera to measure length, area, angle, or height of objects in real-world environment. Draw objects on surfaces and visualize measurements in augmented reality.

    ★ 4.76 ratingsUtilitiesFreeData updated 2026-09-13
  3. Decibel - sound level meter app icon

    Decibel - sound level meter

    Paula Jeff

    Record , measure noise, compare levels

    Measure ambient noise levels and compare recordings to reference charts. Save audio files and view a history of past recordings. Requires subscription for saving and active screen display.

    ★ 4.2410 ratingsUtilitiesFreeData updated 2026-09-06
  4. Booble (for petanque game) app icon

    Booble (for petanque game)

    MATOLE

    Measure distance with bubble level

    Measure distances between boules and the jack in pétanque games using automatic photo capture with a bubble level. Tap on boules and the jack to identify them via visual recognition. Display measurements and rankings.

    ★ 4.7184 ratingsSportsFreeData updated 2026-09-12
  5. Trig Solver app icon

    Trig Solver

    Creature Code Mobile, LLC

    Solve triangles with given sides and angles

    Solve triangles with two modes. Regular triangle mode allows input of 2 sides and an angle, 2 angles and a side, or 3 sides. Right triangle mode accepts 2 sides or a side and an angle. Calculates missing values based on input.

    ★ 4.380 ratingsUtilitiesFreeData updated 2026-09-08
  6. Measure - ARKit Ruler & Meter app icon

    Measure - ARKit Ruler & Meter

    Michele Gruppioni

    Distance

    Distances using Augmented Reality. Tap to place markers and calculate lengths. Undo measurements. Choose different colors for markers. Take screenshots. Switch between metric and imperial units.

    ★ 3.7460 ratingsUtilitiesFreeData updated 2026-09-13
  7. HVAC & Sheet Metal Calculator app icon

    HVAC & Sheet Metal Calculator

    Calculated Industries, Inc.

    Calculate duct offsets and angles

    Performs X, Y, R radius calculations and theta measurements. It includes -specific functions for ducting offsets and angle computations. Features dimensional math, geometry, and trigonometry tools for precise construction calculations.

    ★ 4.955 ratingsUtilitiesFreeData updated 2026-09-06
  8. RulerLevel app icon

    RulerLevel

    世木 林

    Measure length, angles, and sound levels.

    The app offers tools for measuring length, angles, and sound levels. It includes features for unit conversion, network speed testing, and a flashlight.

    ★ 2.01 ratingsProductivityFreeData updated 2026-11-01
  9. Unit Converter Pro HD. app icon

    Unit Converter Pro HD.

    良峰 侯

    Convert units across 30 categories

    Convert units across 30 categories with over 700 measurement options. Switch between light and dark modes. Use a backspace key for editing. Perform conversions quickly with an intuitive interface.

    ★ 4.6186 ratingsEducation$0.99Data updated 2026-09-08
  10. 测量工具Pro-专业测量尺子 app icon

    测量工具Pro-专业测量尺子

    飞剑 姚

    Measure length, track noise levels

    Measure lengths with a ruler supporting metric and inch units. Detect ambient noise levels using a decibel meter. Use a protractor tool to measure angles via camera. Calibrate and view objects for precise measurements.

    ★ 5.02 ratingsProductivity$0.99Data updated 2026-09-12
  11. Partometer3D measure on photo app icon

    Partometer3D measure on photo

    VisTech.Projects LLC

    Objects in 3D space with your camera

    Distances, areas, perimeters, angles, and circle parameters using photos. Define measurement planes in 3D space. Adjust for non-parallel planes. Export measurement data. Share results directly.

    ★ 3.617 ratingsProductivity$2.99Data updated 2026-09-18
  12. Ruler / Measuring Tape app icon

    Ruler / Measuring Tape

    Clafou Ltd

    Measure with your screen

    Measure objects using screen size, augmented reality, or printed rulers. Place virtual on surfaces with ARKit. Print rulers via AirPrint. Compare printed results with on-screen measurements. No ads, in- purchases, or tracking.

    ★ 4.4223 ratingsUtilitiesFreeData updated 2026-09-13
  13. Roof Pitch Factor app icon

    Roof Pitch Factor

    BeOriginal

    Find roof pitch using camera.

    The app determines roof pitch using the device camera. It displays pitch factor and degrees without manual calculations.

    ★ 3.8487 ratingsUtilitiesFreeData updated 2026-10-25
  14. Measuring Tape Ruler Pro App app icon

    Measuring Tape Ruler Pro App

    Junaid Mukadam

    Measure objects with your phone camera

    Measure length, height, and area using AR technology. Point camera at objects or people. Add lines or shapes to measure. Save photos with measurements. Sync measurements across devices.

    ★ 4.747 ratingsUtilitiesFreeData updated 2026-09-06
  15. Measure Tape Lite app icon

    Measure Tape Lite

    JI YAO WENG

    Measure height width distance easily.

    The app measures height, width, or distance using the device's camera. Users find an object on screen and read the calculated measurement.

    ★ 1.112 ratingsUtilitiesFreeData updated 2026-10-13

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.