dB Meter vs NoiseAlert

Turn your iPhone into a precise noise level meter. dB Meter · Noise Analyzer helps you measure, track, and understand sound levels around you in real time. Whether you’re checking if music is too loud, monitoring office noise, or protecting your hearing, this app gives you clear dB readings with a modern, easy-to-read interface. ◆ REAL-TIME dB METER • Live decibel (dB) readings with a large central gauge • Color feedback from safe to dangerous levels • Waveform view that reacts instantly to the sound around you ◆ SESSION STATS • Minimum, average, and maximum dB for each session • Live “LIVE RECORDING” status with session timer • Auto-stop timer option for hands-free measurements ◆ CALIBRATION & PRECISION • Gain calibration slider to match a reference sound level meter • Frequency weighting (dBA, etc.) to match real-world standards • Adjustable response speed (Fast / Slow) for smoother or more responsive readings ◆ SAFETY & AWARENESS • Custom alarm threshold: get visual feedback when levels are too loud • OSHA-style guidance inside the Info screen for exposure limits • Practical listening tips to help you protect your hearing ◆ HISTORY & ORGANIZATION • Save measurement sessions to your history • Review previous sessions with key stats • Useful for repeat measurements in the same locations ◆ CLEAN, MODERN DESIGN • Dark-friendly, minimal interface that focuses on the data • Config pills showing your current response mode and weighting • Optional “Always On Display” to keep the screen awake while measuring PLEASE NOTE: This app is designed for general information and personal use. For professional or legal measurements, a certified Class 1 sound level meter is recommended.

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）