Ruler® app icon

Apps Like Ruler® for iPhone and iPad

Measure with ruler, tape, and camera

Measure objects with a camera ruler mode that uses your phone's camera for distance calculations. Switch between inches and centimeters. Adjust measurements with precision sliders. Access a classic ruler and tape measure for manual measurements.

by Tue Nguyen Minh★ 4.335,090 ratingsUtilitiesFreeData updated 2026-09-08

Ruler® screenshots

Ranked alternatives

Showing 681–700 of 1,000 ranked alternatives.

  1. Decibel Meter : dB Sound Meter app icon

    Decibel Meter : dB Sound Meter

    Nasuf OZGUR

    Measure levels and log them effortlessly

    DB Tracker measures real-time levels and logs historical data. Users can view level trends, set exposure limits, and receive notifications when thresholds are exceeded. Data can be exported for analysis and shared via email.

    ★ 1.01 ratingsUtilitiesFreeData updated 2026-09-06
  2. Pulse Heart Rate Tracker app icon

    Pulse Heart Rate Tracker

    COLLECTION PROFESSIONALS, INC.

    Track with camera and flashlight

    Measure by placing a finger over the iPhone’s camera and flashlight. Track weekly statistics and manually log health data. View detailed readings and set reminders for regular checks.

    ★ 0.00 ratingsHealth & FitnessFreeData updated 2026-09-06
  1. Smart Grid Monitoring System app icon

    Smart Grid Monitoring System

    Nguyen Duc Phong

    Automate substation operations and monitor data

    Monitor and control substation operations with real-time data collection from sensors and measuring equipment. View accurate measurements, track performance, and manage remote devices for efficient management.

    ★ 0.00 ratingsProductivityFreeData updated 2026-09-06
  2. Fluke BA Mobile app icon

    Fluke BA Mobile

    Fluke Electronics Corporation

    Measure battery internal resistance and voltage.

    The app supports the Fluke Battery Analyzer high end mode BT521. Users can browse profiles and review sequence testing data, which can be emailed.

    ★ 5.01 ratingsProductivityFreeData updated 2026-11-06
  3. dBMeter Pro app icon

    dBMeter Pro

    Matthias Schorer

    Analyze sound levels with iPhone.

    The app transforms an iPhone into a sound level meter, offering dual-input measurement and a contextual reference guide. It provides long-term data logging for up to 12 hours and allows for CSV file export.

    ★ 5.02 ratingsUtilities$5.99Data updated 2026-09-10
  4. Fittings App ANSI app icon

    Fittings App ANSI

    Steffen Weber

    Measure flange dimensions and bolt details

    Measure flange dimensions including class rating, bolt size, and thickness. Calculate elbow cutting measurements based on radius and standard specifications. Input manual data for custom adjustments.

    ★ 4.26 ratingsProductivity$3.99Data updated 2026-09-18
  5. Lie detector: test app icon

    Lie detector: test

    Warlock Arts Yazilim Sanayi ve Ticaret Limited Sirketi

    Detect lies by scanning fingerprints

    Detect lies by analyzing pulse variations during questioning. Users cover the back camera, speak, and allow the to scan fingerprints and measure physiological responses to determine truthfulness.

    ★ 4.05 ratingsEntertainmentFreeData updated 2026-09-06
  6. C-MEASURE app icon

    C-MEASURE

    alpha prompt co.,ltd.

    Measure color in XYZ and Lab

    Measure colors in XYZ and Lab color spaces from any photo area. Calculate distance between two colors in Lab. Adjust chromaticity values to match iPhone4 camera characteristics. Supports calibration using color checkers.

    ★ 1.01 ratingsPhoto & Video$2.99Data updated 2026-09-08

How we rank alternatives

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