Loudly vs NoiseAlert

Turn your iPhone into a professional-grade sound level meter. Loudly measures noise levels in real time with stunning accuracy, displayed on a beautiful Liquid Glass gauge. Whether you're checking if your baby's room is quiet enough, documenting noise for a complaint, or protecting your hearing at a concert — Loudly gives you instant, reliable decibel readings. ACCURATE & PROFESSIONAL • IEC 61672 compliant audio engine • A-weighting and C-weighting frequency filters • Fast, Slow, and Impulse time weighting modes • Calibration controls for reference-level accuracy BEAUTIFUL & INTUITIVE • Large, easy-to-read circular gauge • Color-coded noise levels: green (safe) → red (dangerous) • Noise categories with real-world examples: Whisper, Quiet, Moderate, Loud, Very Loud, Dangerous PRO FEATURES (one-time $2.99 unlock) • Min / Max / Average statistics • Session history — track measurements over time • Peak alerts — get notified when noise exceeds your threshold • Leq (equivalent continuous sound level) calculation • Export your readings PRIVACY FIRST • No data collection. No ads. No tracking. • 100% on-device processing — audio is never recorded or stored • No network requests. Your microphone data stays on your device. COMMON USES • Check noise levels at work, home, or events • Monitor baby room sound levels • Document noise for complaints or disputes • Measure environmental noise pollution • Protect your hearing — know when it's too loud No subscription. No ads. Pay once for Pro, yours forever.

建設現場や工場周辺での騒音レベルをリアルタイムで測定するアプリです。マイクを使って周囲の音量をdB（デシベル）で表示し、85デシベルを超えると警告を表示します。建設現場の敷地境界線での騒音基準値（85dB）の確認に最適です。 主な機能： ・リアルタイム騒音レベル表示 ・85dB超過時の警告表示 ・見やすい円形メーター ・カラーコード表示（緑→黄→橙→赤）