StudSignal: Stud Finder

About

Your phone already has the sensor a magnetic stud finder uses. StudSignal turns it into a responsive wall scanner: slide the phone across the wall and watch the live trace react to the screws and nails hiding behind it. A CLEAR SIGNAL, NOT A GUESS - A wide live gauge shows relative magnetic strength as you scan - The trace line draws every bump, so you can compare peaks at a glance - Strong signals fire haptics and an optional tone — no need to watch the screen while your hand is on the wall CALIBRATED TO YOUR WALL - One-second calibration on a bare patch sets the baseline - The threshold adapts to your environment's noise automatically - Three sensitivity levels for plaster, drywall, and busy environments KEEP WHAT YOU FOUND - Save any scan with a label — "living room north wall" — and revisit the full trace and every peak later - All data stays on your phone StudSignal shows the relative magnetic response of metal fasteners. It cannot detect live wiring or wood itself — always verify with dedicated tools before drilling. No ads, no subscription: one purchase, forever.