Magnetometer・Magnetic Field vs G

Magnetometer shows you the magnetic field your phone can already sense. Calibrate a local baseline, then watch how far the field moves away from it — live, in microtesla (µT). How it reads • The big number is deviation from your calibrated baseline in µT, not an absolute field value • An arc gauge moves through four states: Weak, Moderate, Strong and Peak • A rolling waveform shows how the field changed over the last few seconds • Raw X, Y and Z components are listed under the gauge in µT Peaks you can feel • A local peak — a rise followed by a fall — triggers a full-screen flash and haptic feedback • A beep repeats faster and gets louder as the signal gets stronger, so you can watch where the phone is instead of the screen Control the measurement • Calibration establishes your local baseline and rates it: Excellent, Good, Fair or Poor • Four sensitivity levels change how strongly the normalized signal is scaled • High Precision filters noise harder — stronger smoothing, a stricter peak threshold and a longer debounce. Fewer false peaks and a slightly slower response; it does not amplify the signal • Stop a scan yourself and it is saved as a summary: peak count, duration, mode and calibration quality. Up to 100 summaries stay on your device Where people use a magnetometer • Checking whether a screwdriver, scissors or a tool tip has become magnetised • Comparing how strong different fridge magnets, speaker magnets or clasps are • Seeing how the field around a running motor, speaker or appliance changes with distance • Finding out whether a phone case, wallet or stand contains a magnet • Physics homework and classroom demonstrations that need a live µT reading • Simply seeing what the magnetic sensor inside your phone actually reports What makes this magnetometer different Most apps show one absolute number and leave you guessing whether it is high. This one asks you to calibrate where you are standing first, then reports the deviation from that baseline — so the reading answers "how much did the field change here" instead of "what is the field somewhere on Earth". The waveform, the four strength states and the peak flash all describe the same measured signal, and the app is explicit about what it cannot tell you. Getting a clean reading • Calibrate away from metal, magnets and electronics • Move the phone slowly and steadily • Take off cases that contain metal or magnets • Recalibrate when you move to a different room or surface What this app does not do Magnetometer reports what the sensor reads. It cannot tell you what caused a reading, and it does not identify magnetic sources, objects, materials or where they are. It is not a stud finder, a wall scanner or a metal detector, and it makes no claim about anything behind a wall or any other surface. Readings depend on your device's magnetometer and on nearby interference — treat them as a relative guide, not as a professional measuring instrument or a structural inspection tool. Your measurement summaries stay on this device. Requires a device with a built-in magnetometer. Available in 33 languages. Some of the features described require a subscription. Terms of Use: https://zeroplay.io/docs/legal/terms-of-service Privacy Policy: https://zeroplay.io/docs/legal/privacy-policy

G-Force Meter+ Accelerometer shows the G-force your phone feels right now on every axis, then turns each drive, ride or run into a result you can read: press Start, press Stop, and a session card shows the peak G, the average G and how hard you cornered, accelerated and braked. ▶ Live G-force on every axis • Total G on a round gauge with a moving dot for the direction of the force • Lateral (X), longitudinal (Y) and vertical (Z) values side by side • Min, average, max and peak while you record, plus peak chips for lateral, accel and brake • A scrolling chart of X, Y, Z and total G, or a sentence that explains the current G level ▶ Stop and see the session Press Stop and a Session result card appears: • Duration, peak G and average G • Peak lateral, peak accel and peak brake • A second-by-second G trend line (the first 10 minutes of a session) • With the Car activity selected, a plain-language reading of the drive, from Gentle to Very hard, based on the peak horizontal G Every finished session is saved to History automatically (the last 20). A session shorter than 2 seconds is not saved. If you switch apps mid-session, recording pauses in the background and the same session resumes when you return, and a session cut off when the system closes the app is recovered into History on the next launch. Share a result as text in one tap. ▶ History and personal bests Open History from the top of the Meter screen: personal bests, every session with its G trend, your race runs and rolling runs. Export sessions, runs or rolling intervals as CSV. A statistics report CSV unlocks for 24 hours after a short ad. ▶ G-G friction circle A dedicated tab plots lateral against longitudinal G as a trail inside rings at 0.5, 1.0 and 1.5 G, with peak lateral, longitudinal and combined G, so you can see how much grip you used in corners and under braking. ▶ Race mode • 0-60 mph launch timing with raw and rollout times • 60-0 mph brake test with time, distance and speed shed, estimated from the motion sensors • Rolling intervals: 60-120 mph, 100-200 km/h, 30-50 mph or your own range • GPS cross-check with a GPS 0-60 time, a quarter mile time and trap speed. A good fix shows a GPS-verified badge, otherwise the result is labelled as a sensor estimate • Regen profile for electric cars: braking events sorted by their strength into likely regen (gentle) and likely friction (hard), with their maximum G ▶ Set up for your car • Dash or Holder mount, auto-level and Re-level now • Reference 1G (resting reads 1.00 G) or 0G (resting reads 0.00 G) • Display sensitivity from 0.5x to 2.0x for the live gauge; the result card always shows the true values • Activity presets for Car, Roller-coaster, Sport, Elevator and Aircraft explain what each G level means there • A Guide tab with 8 tips on mounting, reading each axis and typical G in daily life • The screen stays on while recording • Interface in 30 languages ▶ Good to know Readings come from the phone's motion sensor, so mount the phone firmly and level it before you record. Launch and braking times are estimates unless they carry the GPS-verified badge. Only drive-test where it is safe and legal. For drivers checking how smooth or hard they drive, track-day and drag-strip fans, roller-coaster riders, and students who want to see physics in numbers.