LevelCheck uses your iPhone's built-in microphone and heuristic DSP to estimate levels. It is reliable for general awareness and setup decisions, but it is not a lab-calibrated or certified measurement tool.
No. LevelCheck is local-first. All your session and profile data stays on your device, and no account is required.
Yes. We process audio in real-time to calculate levels, but we never record, store, or transmit your raw audio.
Since all data is stored locally, deleting the app from your iPhone will remove all associated measurement history and profiles.
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