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Compass, bubble level, magnetic field meter and altimeter in one offline app.
Compass & Level Toolbox is a lightweight outdoor and everyday measurement app that brings four practical sensor tools together in one place: compass, bubble level, magnetic field meter, and altimeter. It is made for people who want fast and clear readings without signing in, creating an account, or relying on a heavy cloud service. Open the app, choose a tool, and get the information you need in seconds. Main features: • Compass - Large heading display with easy-to-read direction text - Magnetic north and true north modes - Calibration guidance when the sensor needs adjustment - Clear location context when GPS is available • Bubble Level - Flat and single-axis measurement modes - Zero reset support - Clean visual feedback when the device reaches level • Magnetic Field Meter - Read total magnetic field strength - View X, Y, and Z axis values - Check whether the environment has magnetic interference • Altimeter - View current altitude with clear source information - Supports GPS and barometer based readings depending on device capability - Relative altitude mode for quick outdoor reference Why this app: • 4 tools in 1 app • Fast launch and simple navigation • Offline-first experience • No account required • Local-first design • Clean interface with clear readings Location is used only where it adds real value, such as true north correction, altitude enhancement, and optional location labels for saved snapshots. Core tools like level and magnetic field readings do not depend on continuous background location. Whether you are hiking, checking direction, leveling gear, or reading local magnetic conditions, Compass & Level Toolbox keeps the experience simple, stable, and easy to understand.