Protractor+ app icon

Apps Like Protractor+ for iPhone and iPad

Measure angles in degrees and radians

Measure angles using your iPhone as a protractor. Select degrees or radians. Adjust the angle visually with intuitive controls.

by Tue Nguyen Minh★ 4.110,412 ratingsUtilitiesFreeData updated 2026-09-08

Protractor+ screenshots

Ranked alternatives

Showing 381–400 of 1,000 ranked alternatives.

  1. KRK Audio Tools app icon

    KRK Audio Tools

    Gibson Pro Audio Corp.

    Measure frequency in real time

    Measure and display real-time frequency spectrum with Spectrum RTA. Calibrate monitor levels using the Level Meter. Determine optimal EQ presets with EQ Recommendation. Align monitors for accurate sound with Monitor Align.

    ★ 4.140 ratingsMusicFreeData updated 2026-09-17
  2. Ruler Professional app icon

    Ruler Professional

    KBIC International Limited

    Measure length in cm or inches

    Convert physical objects into measurements using a function. Adjust two red lines to measure distances in centimeters or inches. Display measurements instantly on the screen.

    ★ 3.33 ratingsUtilitiesFreeData updated 2026-09-08
  1. Geekbench AI app icon

    Geekbench AI

    Primate Labs Inc.

    Test device ML performance

    Measure device performance for machine learning tasks. Run vision and language tests to assess CPU, GPU, and Neural Engine capabilities. View results to compare device speeds.

    ★ 4.233 ratingsUtilitiesFreeData updated 2026-09-06
  2. Stride: AI Form Coach app icon

    Stride: AI Form Coach

    Serhii Borychev

    Analyze videos, create feedback, improve performance

    Analyze sports videos with AI tools. Draw annotations over footage to highlight technique. Measure angles precisely. Navigate slow motion and frame-by-frame. Compare two performances side-by-side.

    ★ 5.01 ratingsSportsFreeData updated 2026-09-06
  3. Roof Guide - Carpentry Calc app icon

    Roof Guide - Carpentry Calc

    Infoguide Pty Ltd

    Calculate , deck, and concrete dimensions

    Calculate pitches, angles, and rise/run ratios. Estimate decking, stair, stud wall, and concrete quantities and costs. Switch between US and metric units. Input measurements for precise material estimates. Export results for project planning.

    ★ 4.116 ratingsUtilitiesFreeData updated 2026-09-09
  4. Measure Tools - LINEA app icon

    Measure Tools - LINEA

    Critec, Lda

    Record and share image measurements easily.

    The app allows users to photograph or import images to record measurements, angles, and text notes. Users can save and share these annotated images, organizing them into folders.

    ★ 2.45 ratingsProductivityFreeData updated 2026-09-30
  5. iMeasure! app icon

    iMeasure!

    Kobi Snir

    Measure objects using device screen.

    The app uses the device's screen to measure real objects. It supports metric or imperial units for measuring length, angle, radius, and diameter.

    ★ 3.24 ratingsProductivityFreeData updated 2026-10-24
  6. CAD Reader-View & Measure DWG app icon

    CAD Reader-View & Measure DWG

    Beijing Honghu Yuntu Technology Co., Ltd.

    View drawings, , annotate

    View and manage CAD drawings with support for DWG, DXF, and PDF formats. Open multiple files simultaneously. Use scale tools to distances in meters and perform continuous length measurements. Add annotations and markups directly on drawings.

    ★ 4.022 ratingsProductivityFreeData updated 2026-09-09
  7. Better Calc app icon

    Better Calc

    Philip Symons

    Calculate, convert, and solve equations

    Perform calculations in standard, scientific, and programmer modes. Calculate totals and taxes. Switch between portrait and landscape layouts. Support multitasking and slide-over on iPad. No ads.

    ★ 5.02 ratingsUtilitiesFreeData updated 2026-09-06
  8. The Best Vibration Meter app icon

    The Best Vibration Meter

    NETIGEN KLUZOWICZ SPOLKA JAWNA

    Measure vibrations and view seismic data

    Measure vibrations using phone sensors to detect seismic activity or body tremors. Display readings on the modified Mercalli intensity scale. Calibrate the to set maximum values between 10-11. Provide reference comparisons for earthquake vibrations.

    ★ 3.140 ratingsUtilitiesFreeData updated 2026-09-09
  9. LightSpectrum Pro app icon

    LightSpectrum Pro

    Antonio Mauriello

    Measure light color temperature and intensity

    Measure color temperature in Kelvin with ±2-8% accuracy. View color spectrum from 360nm to 800nm. Display RGB values and luminance. Save and export measurement data. Compare light sources side by side.

    ★ 4.139 ratingsUtilities$1.99Data updated 2026-11-01
  10. Valchemy app icon

    Valchemy

    Valchemy, inc.

    Recognize contributions and measure impact

    Track team recognition by creating and sharing gratitude notes. Measure psychological safety through feedback and engagement metrics. Foster a productive culture with customizable recognition programs and team health insights.

    ★ 4.79 ratingsBusinessFreeData updated 2026-09-06
  11. GPS Field Area Measurement app icon

    GPS Field Area Measurement

    Stephen Kuyper

    Measure land , distance, and perimeter

    Measure land , distance, and perimeter using real-time GPS. Mark points on a map to calculate fields, plots, and paths. Switch between and distance modes. Supports units like acres, hectares, and square feet. Save and export data.

    ★ 4.134 ratingsProductivityFreeData updated 2026-09-06
  12. DF Lens app icon

    DF Lens

    DigsFact Inc

    Create, measure, view, inspect 3D spaces

    Create and view 3D tours of spaces like homes, hotels, and landmarks. Measure dimensions, inspect details, and add annotations. Share tours via website, social media, and messaging apps for $0.99.

    ★ 4.713 ratingsProductivityFreeData updated 2026-09-20

How we rank alternatives

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