Sensor Toolkit

Dotliner

Contains ads

About this app

Sensor Toolkit turns your phone's built-in sensors into 10 precise, everyday measurement tools — all in one lightweight app.

■ 10 tools included

• Level — check surfaces with a bubble level using the accelerometer
• Compass — find your direction with a smooth, animated needle
• Ruler — measure real objects on screen, with credit-card calibration for accuracy
• Protractor — measure angles using touch or the device's tilt
• Sound meter — measure ambient noise levels in decibels (dB)
• Vibration meter — detect and visualize vibrations around you
• Magnetometer — measure magnetic field strength in microtesla (µT)
• Heading — a precise numeric bearing readout for navigation
• Timer — a clean, reliable countdown timer
• Metronome — accurate tempo with tick sound and haptic beat

■ Why Sensor Toolkit?

• No ads while measuring — measurement screens stay clean and distraction-free
• Precise readings — carefully tuned sensor processing with smooth motion
• Fast and lightweight — opens instantly, no account, no sign-up
• Works offline — all tools run fully on your device
• Dark theme designed for readability

■ Privacy

Sensor readings never leave your device. Permissions (such as microphone for the sound meter) are requested only when you open the tool that needs them.

Note: measurement accuracy depends on your device's sensor hardware. Values are for reference and should not be used where certified instruments are required.

What’s new

• Now available in 20 languages
• Ruler: credit-card calibration for more accurate measurements
• Improved stability and performance