Stud Finder Pro vs Stud Finder

Measure twice. Drill once. Stud Finder Pro turns your iPhone's built-in magnetometer into a precision wall scanner, the same sensor that powers your compass, calibrated to find the nails and screws inside drywall, plaster, and lath. Take the case off. Hold the top of your phone flat to the wall. Slide slowly. The signal climbs as you cross a screw, peaks dead-center, and drops on the other side. Mark the peak. That is your stud. Built for the moment between picking up the drill and committing to the hole. WHAT'S INSIDE A real-time magnetic-field readout in microteslas. A clean amber arc gauge that sweeps from idle to peak as you cross metal. Audio feedback that climbs with the signal so you can scan without watching the screen. Haptic confirmation at peak. A two-second auto-calibration that zeros out the room before you start. THE WAY IT WORKS Your iPhone has a magnetometer near the top edge, the same sensor your compass app uses. Stud Finder Pro reads it forty times a second, watches for spikes against your calibrated baseline, and shows you exactly where the metal is. Wood studs themselves are not magnetic, but the screws and nails that fasten drywall to them are. Find the screw. The stud is centered around it. HOW TO GET ACCURATE READINGS Remove your phone case. Magnetic accessories, metal-rich cases, and watches all skew the magnetometer. Hold the top edge of your phone flat against the wall. Slide slowly and steadily. Calibrate first by holding still for two seconds in an open area away from metal. WORKS ON Drywall, plaster, lath, and most painted wall surfaces. Concrete walls with rebar register strong signals everywhere, which is not what the app is for. DOES NOT DETECT Wood directly. Plastic pipes. Live electrical current. Non-magnetic metals like copper or aluminum. This is a ferromagnetic detector, not an X-ray. OFFLINE-FIRST PRIVACY No accounts. No advertising trackers. The magnetometer data never leaves your device. Anonymous usage analytics through TelemetryDeck only, no personal identifiers, no cross-app tracking. PRO TOOLKIT Pro unlocks unlimited scans, calibration memory, and the full-precision experience without any session limits. One payment, yours forever. Terms of Use: https://cmlapps.github.io/studfinder/terms.html Privacy Policy: https://cmlapps.github.io/studfinder/privacy.html Support: https://cmlapps.github.io/studfinder/support.html

Find studs behind drywall using your iPhone's built-in magnetometer. This app detects metal fasteners (the screws and nails holding your drywall to wood studs) and helps you locate stud lines behind your wall. HOW IT WORKS Your drywall is screwed into wooden studs roughly every 16 inches. This app picks up those screws by reading changes in the magnetic field as you sweep your phone across the wall. Find screws in a vertical line and you've found the stud. HOW TO USE Take your case off. Hold your phone flat against the wall. Sweep slowly left and right. When the signal spikes, there's metal nearby. Mark each spike, look for a vertical line of hits, and that's your stud. Drill a small pilot hole before you mount anything heavy. If the bit hits something solid, you're on the stud. If it punches right through, move an inch and try again. Takes 30 seconds. WHAT THIS APP CANNOT DO It detects metal, not wood. If there are no screws or nails in the wall where you're scanning, it won't find anything. It also won't work well through thick plaster, concrete, or tile. And it's not a replacement for a professional stud finder on structural work. For mounting a TV, hanging shelves, or putting up pictures on normal drywall, it works. No ads. No nag timers. No interruptions. PRIVACY No account. No tracking. No data leaves your phone.