Sound Meter - Decibel
Sound Meter turns your iPhone into a professional decibel meter. Measure the noise level around you in real time and protect your hearing health.
Turn your iPhone into a sound level meter
Noise usually stays a feeling — the neighbors upstairs, the hum of a café, machinery at work. Decibel Meter turns that feeling into numbers and records, measuring your surroundings in real time so you can protect your hearing.
Key features
Real-time decibel measurement
An intuitive circular gauge shows the current level at a glance while a live chart plots how sound changes over time, so spikes are visible rather than remembered.
Detailed statistics
Every session tracks minimum, maximum, and average decibel levels, separating a brief spike from sustained exposure.
History and sharing
Save sessions to revisit later and share results with others — useful evidence when raising a noise problem.
Calibration
Adjust sensitivity to your device and environment so readings stay dependable.
Alert thresholds
Set a custom decibel limit and get notified the moment it's exceeded — ideal for workplace noise or sleep environments.
Personalization
Choose from multiple themes to suit your taste.
Great for
- Documenting noise from neighbors or nearby construction
- Understanding noise exposure at work
- Checking whether a bedroom is quiet enough for sleep
- Comparing cafés and offices as places to focus
Available in 18 languages including English, Korean, Japanese, and Chinese.
Sound Meter - Decibel
Sound Meter turns your iPhone into a professional decibel meter. Measure the noise level around you in real time and protect your hearing health.