TheoMeter

TheoMeter helps you monitor sound levels, view live frequency spectrum activity, and document setup conditions from your iPhone.

Designed for public-event and auditorium sound checks, TheoMeter combines a live dB meter with spectrum analysis tools, photo documentation, saved sessions, and exportable data. Use it to quickly understand room noise, monitor target levels, track peaks, and capture setup photos with optional dB overlays.

Features include:

-Live sound level meter with dBA, dBC, and dBZ weighting
-Real-time frequency spectrum display
-RTA bars, spline, and spectrogram views
-Dominant frequency and selected band tracking
-Fast, slow, and impulse response options
-Leq, average, max, peak, and session duration stats
-Dosimeter-style noise exposure view
-Camera mode with sound-level overlay and filters
-Save and export session data
-Calibration offset controls
-Clean navy, yellow, and white professional interface

TheoMeter is ideal for sound technicians, event volunteers, venue setup teams, educators, presenters, and anyone who needs a clear view of sound levels and frequency behavior in a room.
Note: TheoMeter uses the iPhone microphone for practical sound analysis. For compliance-grade measurements, use a professionally calibrated sound level meter.