Sotto / Sound level meter

Measure sound.
Keep the receipt.

A fast, minimal decibel meter that gives every reading context—and turns the moments that matter into clean Noise Receipts.

Download on the App Store

No account. No ads. No audio recordings. iPhone.

Real-time level • Min / Avg / Max
Sotto meter screen showing an 80 dB reading labelled Busy restaurant level with min 59, avg 72, and max 90
How it works

Open. Read. Know.

  1. 01

    Measure instantly

    Sotto begins measuring when you open it.

  2. 02

    Understand the number

    Plain-language labels put each dB reading in context.

  3. 03

    Save what matters

    Keep the level, range, time, place, and an optional note.

Context

A number is better with context.

Sotto shows a real-time dB level alongside a plain-language label, so you know what the reading actually means—Calm conversation, Busy restaurant, or Concert level.

Current
80dB
Min
59dB
Avg
72dB
Max
90dB

Example values. Readings vary by device and environment.

Noise Receipt

When noise matters, keep the receipt.

Save the reading, minimum, average, maximum, time, location, and an optional note. Share a clean record in seconds.

  • A noisy venue.
  • A workspace concern.
  • A before-and-after comparison.
  • Simple curiosity.
Sotto Noise Receipt: 71 dB, Busy street, min 66, avg 68, max 71, Aug 17 2026 at 20:21, Union Square, San Francisco
History

Build a useful sound history.

Return to the readings that mattered without creating an account or sending your history to the cloud.

  • Saved locally
  • Locations are optional
  • Notes add context
Privacy

Your audio stays private.

Sotto analyzes microphone input in real time to calculate sound levels. It does not create, save, or upload audio recordings.

No account. No ads. No audio recordings.

Read the privacy policy
Pricing

Try it free. Upgrade once.

Free

  • Real-time decibel meter
  • Plain-language sound context
  • Live minimum, average, and maximum
  • Up to three saved measurements

Sotto Pro — one-time purchase

  • Unlimited saved measurements
  • Create and share Noise Receipts
  • No subscription

One-time purchase. Local price shown in the App Store.

FAQ

Questions

Does Sotto record audio?
No. Sotto analyzes microphone input in real time and never creates, saves, or uploads audio recordings.
Is Sotto a certified professional sound-level meter?
No. It's a fast everyday utility, and readings can vary by device and environment.
Do I need an account?
No. There's no sign-up and nothing to log in to.
Where are saved readings stored?
Locally on your iPhone.
Is Sotto free?
The meter and three saved readings are free. Pro is a one-time upgrade.

Know your noise.

Open Sotto, get the reading, and keep the moments that matter.

Download on the App Store