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Most setup hiccups take a minute to fix. Find the answer, get back to listening, and contact us when something still feels off.

First, the questions most people have

What does the number on screen actually mean?
Volume Shield combines outgoing digital audio level, your Mac's output-volume setting, and a reference output value for your headphone model or category. It adds a small, bounded safety margin and presents the result as an engineering estimate in dBA, not a calibrated acoustic measurement.
Why does time matter if the volume feels comfortable?
The seven-day allowance is a rolling estimate that combines level and listening time. With the default reference, 80 dBA corresponds to about 40 hours across seven days, 90 dBA to about 4 hours, and 100 dBA to about 24 minutes. It is guidance for awareness, not a prediction that hearing damage will occur at a precise moment.
Will it help me see my listening habits?
Yes. Settings shows estimated average and maximum level, listening duration, seven-day exposure, daily and hourly patterns, Automatic Volume Reduction events, and weekly, monthly, yearly, or all-time trends. Numeric history stays on your Mac until you export or delete it.
Is this a medical device or a hearing test?
No. Volume Shield is a consumer guidance tool for personal awareness. It is not a medical device, hearing test, diagnosis, or certified sound-level meter, and it is not a substitute for professional care.
What if I switch between different headphones?
Volume Shield starts monitoring any connected headphones immediately. Some devices have a specific model profile; for others it uses a category estimate or a broad universal fallback. It always shows which estimate it is using so you know how much confidence to place in it.
What if my exact headphone model is not listed?
Nothing stops. Volume Shield keeps monitoring with a clearly labeled category or universal estimate. You can pick the closest model in a searchable list or choose "Use a General Estimate," and your choice is remembered for that device.
Why does it stop when I use Mac speakers?
That is deliberate. Volume Shield is built for headphones. When output switches to the built-in speakers it stays inactive rather than guessing, because it cannot estimate exposure at your ears the same way.
Will it change my volume without asking?
Only if you enable Automatic Volume Reduction. After the estimated level stays above your limit, it can gradually lower a headphone output that macOS reports as adjustable. It never raises volume, never touches speakers, and you can undo a reduction or turn the feature off. Warnings on their own never change your volume.
Can it hear what I am listening to?
No. Audio is analyzed in memory and immediately reduced to numeric level statistics. Raw audio is never recorded, saved, exported, or transmitted, and the app does not collect song titles, media or app activity, or microphone data. There is no account or telemetry. License activation, validation, and deactivation are the explicit network exception and use Lemon Squeezy over HTTPS; the key and installation identifier are stored in this Mac's Keychain. History stays on your Mac until you export or delete it.
How much should I trust the estimate?
Treat it as useful guidance, not a laboratory measurement. Real output varies with fit, seal, EQ, codec, ANC mode, firmware, and amplification. The app shows a confidence tier for every estimate, and an optional personal calibration can improve consistency for a single device and setup.
What does my Mac need?
macOS Sequoia 15 (15.0) and later on Apple silicon and Intel Macs. Volume Shield relies on the Screen & System Audio Recording permission to read outgoing system audio; it does not request microphone access.
Do I have to keep paying for it?
Volume Shield is $29.99 as a one-time purchase with lifetime access on one Mac. There is no subscription or usage-based charge.

If something is not working

“Permission needed”

Open System Settings › Privacy & Security › Screen & System Audio Recording, enable Volume Shield, return to the app, and choose Retry.

“Reconnecting to headphones…”

Let the Bluetooth route settle. Volume Shield intentionally hides the previous estimate until a fresh reading is available.

“Monitoring temporarily unavailable”

Choose Retry. If it keeps recurring, export a diagnostic report from Settings and include it with your feedback.

Nothing shows on speakers

That's expected. Volume Shield is designed for headphones and stays inactive on the built-in speakers rather than guessing at exposure.

The app is not in the menu bar

Launch Volume Shield from Applications, then look near the right side of the menu bar or inside Control Center if the menu bar is crowded. If it still does not appear, quit any existing copy and launch it again from Applications.

Sparkle says an update failed

Open Settings › General › Updates and choose Check for Updates again. If the update feed is temporarily unavailable, download the latest signed DMG from the download page and install it over the existing copy.

The DMG will not install

Confirm the download finished, open the DMG again, and drag the app to Applications. Do not bypass a macOS security warning based on a screenshot; confirm the current checksum against the GitHub release page first.

Send a useful report

The most useful reports are simple: tell us your Volume Shield and macOS versions, whether you were using Bluetooth or wired headphones, what happened, and what you expected. When asked, attach a privacy-safe diagnostic report—it excludes raw audio, media titles, application activity, documents, and microphone content.

Reach the team through the public product-support channel. Please do not post license keys, receipts, or other sensitive information.

For a self-service refund within 14 days, use the refund request page. For order, billing, or license-key help, use the Lemon Squeezy My Orders page.

Feedback is especially useful for permission prompts, menu-bar behavior, update errors, and headphone recognition. A few concrete details can save a lot of back-and-forth.

Looking to install? See the download page. Volume Shield provides estimates for personal awareness and is not a medical device, hearing test, or substitute for professional care.