Measurement tools

Bubble level, clinometer, ruler, metal detector, sound meter, and unit converter.

Bubble Level

Uses your phone's accelerometer to check if a surface is level. Works in both horizontal and vertical modes.

Measures slope angles — useful for evaluating terrain steepness for shelter building or route planning.

Uses the magnetometer to detect nearby metal objects. Vibration intensity increases as you get closer to metal.

Approximate decibel measurement using your phone's microphone. Shows levels from quiet to dangerous.

Convert between units for temperature, distance, weight, volume, pressure, speed, and area.

Compass, altimeter, GPS coordinates, sun & moon, and speedometer.

Weather forecast, lightning distance, wind chill, heat index, and tides.

Flashlight, SOS light, morse translator, strobe, night light, and color screen.

Water boil timer, emergency whistle, frequency generator, CPR metronome, and stopwatch.

Emergency numbers, Morse code table, ground-air signals, and Beaufort scale.