Sound Meter - Sotto

Measure the world around you

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Turn your iPhone into a precise sound meter. Measure decibel levels in real time and better understand the noise around you. Sotto is a minimal sound level meter that measures the decibel level around you in real time. Open the app, and it starts listening. No setup, no account, no tutorial. The screen shows your current dB reading with a plain-language label — "Calm conversation," "Busy restaurant," "Concert level" — so you know what the number actually means. Tap Save to capture a measurement with the timestamp, your location, and an optional note. Review your history anytime. Share a clean measurement card with anyone — useful for documenting noise complaints, checking venue levels, or just satisfying your curiosity. No audio is ever recorded or stored. Sotto only reads the microphone's amplitude level. Free features: - Real-time dB meter with context labels. - Min, Avg, and Max tracking per session. - Save up to 3 measurements with location and notes. Sotto Pro (one-time purchase): - Save unlimited measurements. - Share and export measurement cards. Built by PhantomBuild. No ads. No tracking. No account required.

Ratings & Reviews

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Significantly improved dB measurement accuracy. Readings now closely match professional sound level meters.

Version 1.2

The developer, PhantomBuild, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • VoiceOver

    • Larger Text

    • Dark Interface

    • Reduced Motion

Information

Seller
  • PhantomBuild OU
Size
  • 13.2 MB
Category
  • Utilities
Compatibility
Requires iOS 18.0 or later.
  • iPhone
    Requires iOS 18.0 or later.
  • Mac
    Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 PhantomBuild
  • Developer Website
  • Privacy Policy

    • More by PhantomBuild