OmniMeter

Your phone already has a Swiss Army knife of sensors built in — OmniMeter just tells you what they actually mean. Most sensor apps hand you a raw number and leave you guessing. OmniMeter translates every reading into plain English: "73 dB" becomes "Louder than a vacuum cleaner — hearing damage risk." "49 µT" becomes "Normal — Earth's magnetic field." "-50 dBm" becomes "Excellent — right next to the router." 20 TOOLS, NO CLUTTER Sound & Motion 🔊 Decibel Meter — live sound level with peak tracking 📐 Bubble Level — a real spirit level for hanging pictures and checking shelves 📳 Vibration Meter — measure shaking, from a phone buzz to a hard impact 🧲 EMF Detector — sense magnetic fields from hidden devices and wiring 🔍 Metal Detector — find studs, pipes, and hidden metal in walls Light & Display 💡 Light Meter — ambient brightness in lux, from pitch dark to direct sun 🔦 Flashlight — steady beam or an SOS strobe 📱 Screen Test — check for dead pixels and dead touch spots 📏 Ruler & Protractor — measure small lengths and angles Location & Navigation 📍 GPS Coordinates — latitude, longitude, altitude, and speed 🛰️ GNSS Sky View — see exactly which satellites your phone can see and use 🚗 Find My Car — save a spot, then get a compass arrow back to it 🔢 Coordinate Converter — decimal degrees, DMS, and UTM 🧭 Compass — find your bearing, no data connection required Connectivity & Hardware 📶 WiFi Signal — room-by-room signal strength in dBm 📇 NFC Tools — read and write NDEF tags 🔧 Sensor Inventory — every hardware sensor your phone actually has 🌡️ Barometer — air pressure, estimated altitude, and weather trends 🔋 Battery Meter — charge level and charging state 🔊 Speaker Clean — shake water out of your speaker after a splash PERMISSIONS, EXPLAINED BEFORE YOU'RE ASKED OmniMeter doesn't just list every permission it might ever need at install time and leave you guessing. Open a tool that needs your microphone, location, or NFC radio, and it explains exactly why, in plain language, before Android's own permission prompt appears. BUILT FOR PRIVACY OmniMeter runs 100% offline. There's no backend, no account, and no server anywhere in the picture — every reading is calculated on your device and never leaves it. Microphone audio is analyzed in real time and never recorded. Location is only read live for the tools that need it and is never stored or sent anywhere. SIMPLE, HONEST, AND FREE No sign-up. No subscription. Just point your phone at the world and get an answer you can actually understand.