サウンドチェッカー - 騒音計dBデシベル測定

What's the noise level around you?
Sound Checker measures ambient noise levels in real-time using your phone's microphone.

- Check apartment noise from neighbors
- Measure snoring or teeth grinding volume
- Monitor noise at construction sites or events
- Check sound levels in your baby's room
- Measure quietness of cafes and offices

Features:
- Real-time dB measurement with large meter display
- 30-second waveform graph
- Measurement history (min/avg/max dB auto-saved)
- WHO noise level guidelines & Japan environmental standards

Your microphone is used only for measurement. No audio data is stored or transmitted. Completely free with all
features available.

Note: This app provides approximate noise level readings using your smartphone's microphone. For legal evidence or
precise measurements, please use a professional sound level meter.