Multi Measure Tool Kit is a tool kit app with 23 cool measuring tools and utilities like spirit level speedometer magnetic field meter (teslameter) seismometer and more.

Tool kit list:
Ruler: Measure dimensions and angles of different objects;
Spirit level: Check the surface levels;
Speedometer: Displays you the speed on a racing-style gauge using GPS. It also records maximum speed average speed traveled distance and a current slope;
Distance meter: Measure distance and height of different objects using smart algorithm;
Protractor: Measure the slope (angle) of any object using your camera and imaginary weight;
Speed gun: Measure speed of moving objects using smart algorithm;
Unit converter: Convert between different currencies and physical units. Currencies are updated automatically;
Compass: Will help you discover the right direction;
Location (map): Shows your current location on the map current GPS coordinates and the altitude;
Stopwatch: Measure the time accurately. It also includes the countdown option;
Magnetic field (teslameter): Detect magnetic field of nearby materials and observe it on real time chart;
Seismometer: Observe real time seismometer data based on Richter scale. The algorithm is auto-calibrating;
Luminosity meter: Measure the environmental luminosity (Lux);
Color meter: Capture the color of any object in RGB format through your camera;
Heart rate: Measure your heart rate with a camera and observe a real time pulse chart. Smart algorithms are used to filter the noise;
Sound meter: Monitor the current sound pressure level and its spectrum;
Pitch tuner: Tune the pitch of your voice or musical instruments. It can also play the corrected tone;
Metronome: Classic metronome with adjustable tempo;
Thermometer: Displays current temperature humidity and air pressure;
Drag Racing: Measure the performance of your vehicle. You can switch between different acceleration and brake tests. It includes an auto start/stop function and a chart;
Battery tester: Test your device's battery;
Accelerometer: Displays device's accelerometer sensor data in real time on a chart.

Tool kit supports both unit formats (metric unit/imperial unit) and several languages. The app supports all device brands (Samsung Sony HTC LG Huawei Lenovo Toshiba and others). However not all models have the appropriate sensors to support all of the measuring utilities. It is tested mostly on Samsung Sony HTC LG Huawei Lenovo and Toshiba. Feel free to email me if you find any bugs or need any help with the tool kit.

Please note that this is a free app with ads.