Phon App
carlos prieto ortiz · Productivity
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Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
Manual calibration. Phon can now be matched to a reference. If you have a sound level meter you trust, or a 94 dB acoustic calibrator, type its level and Phon adjusts its own offset until the two agree. The offset is remembered between sessions and shown under the reading, so you always know what a measurement is based on. The built-in microphone and an external measurement microphone keep separate offsets, so calibrating one never disturbs the other. The offset is recorded in CSV exports too. Measured Phon against a real instrument, or found something odd? I would like to hear about it: support@priet.us
In-app purchases · US
What this app sells inside itself, grouped by kind and priced for this storefront.
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About
Phon is a sound level meter built like a measurement instrument, not a toy VU meter. MEASURE • Real-time dB SPL on an analog needle with a precise digital readout • A-weighting and Fast time constant, as defined in IEC 61672 • Session minimum, average and maximum • Per-model calibration for the built-in microphone, so readings mean something out of the box CALIBRATED EXTERNAL MICS Plug in a USB-C measurement microphone and Phon detects it instantly. Load the calibration file that came with your mic and Phon applies its measured frequency response and sensitivity to every reading. Built and tested with the Dayton Audio iMM-6C. Other USB-C measurement mics with an FRD-style calibration file should work too. PHON PRO — ONE-TIME PURCHASE • Calibration file loading for external mics • C and Z frequency weightings • Slow and Impulse time constants • Leq, the equivalent continuous level over the whole session • CSV export of the full session log, with timestamps, IEC 61672 column names and all calibration metadata Family Sharing supported. No subscription, ever.
What's new · 1.0.2
Manual calibration. Phon can now be matched to a reference. If you have a sound level meter you trust, or a 94 dB acoustic calibrator, type its level and Phon adjusts its own offset until the two agree. The offset is remembered between sessions and shown under the reading, so you always know what a measurement is based on. The built-in microphone and an external measurement microphone keep separate offsets, so calibrating one never disturbs the other. The offset is recorded in CSV exports too. Measured Phon against a real instrument, or found something odd? I would like to hear about it: support@priet.us
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