Decibel Meter: dB Noise Level

Decibel Meter shows how loud it is the moment you open it. No sign-up, no paywall, no waiting: a big dB number, a gauge, min / average / max and a live 60-second curve. Then comes the fun part. Set a limit, and when the room stays too loud, a funny voice yells at it. Grumpy Grandpa, Santa, a robot, a cowboy, a cartoon mouse, a demon… 17 recorded voices, or record your own line ("Kids, bedtime!") and let the phone say it for you. Made for classrooms, noisy kids, open offices and roommates. SOUND LEVEL METER • Live dB reading within a second of launch • Gauge with a draggable limit line • Min, average (Leq) and max for the session • 60-second curve and a reference chart (whisper 30 dB, traffic 70 dB, concert 110 dB) • One-tap calibration against another meter, applied to every number • Keeps measuring with the screen locked, with a Live Activity on the lock screen and in the Dynamic Island • Session history with a per-second timeline, notes and CSV export • iPhone and iPad, portrait and landscape PIPE DOWN ALARM • Pick a limit (60, 70, 85 dB or your own) and how long the noise has to last • A random funny voice, Grumpy Grandpa, or your own recorded sounds • Red screen flash and vibration • Repeats while it stays loud, then goes quiet • "Times too loud today" counter SCREAM BATTLE • 2–6 players, a word appears, everyone screams it in turn • Loudest scream wins the trophy, with confetti and Grandpa announcing the winner • Every scream saved as a curve, all-time record and a leaderboard by name BABY MODE • Listens for crying and answers with your own recorded voice (a lullaby, a long shhh), a shhh rhythm, or pink / white / rain noise • Soothes for 30 seconds to 30 minutes, or until the room is quiet • Keeps listening all night with the screen locked • Adjustable cry level and how long the crying has to last • Notification when the baby cries again, bedtime reminder PRIVACY Measurements are never recorded or uploaded: the sound level is computed on your device. Audio is saved only when you record your own alarm or baby sound, and it stays on your device. Free, with a small banner ad. No subscription.