Measure lengths with a ruler supporting metric and imperial units. Detect ambient noise levels using a decibel meter. Use a protractor tool to measure angles via the camera. Calibrate screens for accurate color display.
by 飞剑 姚★ 4.576 ratingsUtilitiesFreeData updated 2026-09-11
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.
Measure sound levels with a precision instrument featuring a . Calibrate against professional dB meters. Log noise data and set decibel thresholds. Display real-time sound level readings and frequency analysis.
Track routes, find waypoints, and navigate offline
Navigate outdoors with offline GPS maps and real-time augmented reality. Track waypoints and custom locations. Use a gyrocompass, speedometer, altimeter, and inclinometer. Find celestial bodies and measure angles.
The app provides a collection of 13 measuring tools and a flashlight. It includes a barometer, altimeter, compass, teslameter, metronome, stopwatch, timer, seismometer, plumb bob, surface level, spirit level, and ruler.
Measure objects using touch as or tape measure. Split objects into equal parts and calculate width/height ratios. Estimate diameter, angles, and divide circular objects. Switch between millimeters and inches for units.
Detects objects using smartphone's magnetic sensor. Identify nearby metals like iron, nickel, steel, and alloys. Locate lost keys, coins, and wires in walls. Does not detect non-magnetic metals such as silver, gold, or copper.
GPS-based digital displays current speed during driving, flying, cycling, or boating. Shows head-up display mode on car dashboard. Displays maximum speed limit and road name. Includes linear compass for direction.
Scan documents and images for precise digital copies. Measure heights and object dimensions using phone camera. Automatically count items like pipes, logs, and pills. Save and share scanned files directly.
Measure angles with touch or camera modes. Tap the screen to set points and calculate angles. Capture images for instant analysis. Customize measurement tools and save multiple angles simultaneously. Sync measurements across devices.
Measure sound levels using dBA and dBC scales. Detect levels accurately with pre-calibrated sensors. Log and analyze data. Set sound level alerts. Export measurements for review.
Measure acceleration, orientation, and motion with built-in sensors. Record and analyze real-time data for experiments. Detect and generate sound tones. Visualize audio waveforms. Export measurements and graphs for scientific use.
Measure distances using augmented reality by pointing the camera at objects. Display measurements between selected points. Use an on-screen to measure objects placed on the phone surface. Set and track measurement targets.
Analyze frequencies with a real-time display. Adjust and visualize sound levels across different frequency ranges. Export analysis data and compare signals for accuracy. Calibrate equipment for optimal performance.
GPS tracks current speed, distance, and altitude. Displays average and maximum speed. Shows speed limits in real time. Supports mph, km/h, and knots. Measures travel time and battery level. Works offline.
Measure by matching the inner edge to the 's white circle. Adjust the slider to align the diameter or circumference. View results in metric or imperial units, including US, Canadian, and Australian sizing systems.
Measure distances and areas with precise tools. Use the ruler and square area functions. Change units of measurement. Save measurements for later. Access tips and advice. Remove ads with a subscription. Measure height with the professional package.
Measure areas and calculate distances using GPS. Draw polygons on maps to calculate field areas. Save and share data. Access detailed maps and satellite imagery for accurate surveying.