(magnetic sensor). This sensor measures electromagnetic fields and can only detect ferrous metals like steel or iron; it detect non-ferrous metals like gold, silver, or copper. Satellite Limitations:
| | App Name & Link | Core Function | Key Feature | | :--- | :--- | :--- | :--- | | Satellite Tracking | Look4Sat: Satellite tracker | Track satellites and predict their passes over your exact location. | Open-source, ad-free, low impact on battery. | | Satellite Tracking | Orbitrack | An AR (Augmented Reality) satellite tracker and spaceflight simulator. | See where satellites are in real-time by pointing your phone at the sky. | | Satellite Tracking | OrbTrack, View The World Above | View actual positions of Earth-orbiting objects and satellites using your phone’s camera. | Calculate coordinates, playback past/future position events, and can work offline. | | Metal Detecting | Metal Detector by EXA Tools | Uses your phone's magnetic sensor to measure magnetic fields. | Simple interface with a visual gauge, sound, and vibration alerts for nearby metal. | | Metal Detecting | Magnetic Field Meter | A professional EMF and metal detector all-in-one app. | Can find metal studs, pipes, and rebar behind walls using the magnetometer. | | Metal Detecting | Physics Toolbox Sensor Suite | A scientific toolkit that includes a magnetometer mode. | Graphs magnetic field intensity across X, Y, and Z axes, with data recording and export for serious hobbyists. | (magnetic sensor)
Use these apps keeping in mind that they are fun novelty tools or basic utility sensors for close-range magnetic metal only. | Open-source, ad-free, low impact on battery