This tool transforms your device into a professional sound level meter, offering precise measurements of ambient noise. It features advanced calibration, frequency analysis, and data management for various applications, from personal curiosity to professional use.
Reviews of Decibel X are mixed: the Utilities app is rated 4.6/5 from 164K App Store ratings. What users like most: excellent app, easy to use and understand. Top complaints: expensive subscription model, misleading free trial. Summarized from real user reviews.
9.9.9
October 27, 2026
Thanks for using Decibel X! Here's what's new for the version 9.9.9: ∿ [Improvements] - iPhone Duo and iPad: every screen except the Camera now rotates to all four orientations ∿ [Fixes] - Fix the Camera preview is rotated 90 degrees on iPhone Duo ∿ [Fixes] - Fix the "Premium activated" screen popping up every time the app is opened by a subscriber ∿ [Fixes] - Several other minor tweaks & bug fixes What to expect in upcoming versions: ∿ Support external or bluetooth mics ∿ Hearing test
MoreGet everything Decibel X has to offer
3 issues
App crashes when deleting recordings
Microphone issues on certain devices
5 requests
Add GPS coordinates to recordings
Improve reporting and data export
No, Decibel X does not contain advertisements. The app is free to download and use, with optional in-app purchases for advanced features and subscriptions.
Decibel X offers Weekly Membership for $1.99, Monthly Membership for $5.99, and Annual Membership for $49.99. The Annual Membership includes a 3-day free trial.
The app is tested and pre-calibrated for all Apple devices, aiming for precision matching real SPL devices. For serious purposes requiring higher accuracy, custom calibration using an external reference meter is suggested.
Decibel X is available on Apple Watch, iPhone, and iPad. It also supports Live Activity and Dynamic Island features.
The latest version, 9.9.9, was last updated on October 27, 2026. The app is generally updated regularly to improve performance and add features.
Users praise its accuracy, ease of use, and usefulness for various applications like hearing protection. However, some find the subscription model expensive and mention misleading free trials or intrusive ads in some reviews, though the app itself is ad-free.
Yes, recorded data can be saved into history records and exported as high-resolution PNG graphs or CSV text via sharing services. iCloud support is also available for synchronizing records across devices.
Decibel X has an age rating of 4+, making it suitable for a wide range of users. The app's features are generally accessible and understandable.
