Live meter and context scale
See dB(A), LAeq, peak, and familiar reference points such as a library, office, street, transit, and concert.
Fifteen-second spot check
Before working, calling, or meeting, get a short, plain-language suitability result and an easy retry.
Record a noise event
Capture 1–10 minutes of levels, peaks, curves, and event labels; raw audio is not stored by default.
Overnight sound card
A low-glare clock, night average, loudest events, threshold count, and public reference context for the morning.
Diary and weekly report
Local calendar heat, event timelines, and an on-device or template summary with its source clearly labeled.
Offline PDF / CSV export
Include time, duration, calibration status, averages, peaks, and events; review the content before sharing.
Use cases
Measure first, then choose the next step
Office and coffee shop
Decide whether a place works for focus, calls, or meetings without relying on a vague feeling.
Bedroom and nursery
Review night averages, peaks, and event times; references are context, not a health diagnosis.
Neighbor noise and renovation
Organize timestamps, duration, peak level, and labels into a record that is easy to inspect.
Concert, gym, and job site
Use the NIOSH reference formula to understand a reference exposure duration at the current level.
Common questions
Numbers, privacy, and boundaries
Does SoundDiary save recordings?
Not by default. Measurement and event labeling run on-device; only structured levels and labels are stored. A ten-second clip requires a second confirmation.
Is it a professional sound-level meter?
No. Phone microphones need calibration and may be limited at high levels; uncertainty stays visible in the app and exports.
Does it work offline?
Yes. Measurement, recording, diary, template summaries, and PDF/CSV export are designed as local workflows.
Does it make medical claims?
No. It provides public reference thresholds and everyday context, not hearing, sleep, or other medical diagnoses.
Official information and support
Read the current scope, permission notes, privacy policy, terms, and troubleshooting guidance.