Roomring: Acoustic Decay

Roomring: Acoustic Decay is a focused, fully on-device app. An on-device room-acoustics studio for imported impulse responses, ETC, Schroeder decay, octave-band RT60, clarity, room modes, placement sweeps, and treatment notes. KEY FEATURES - Import WAV impulse responses or use a complete sample - View waveform, ETC, and backward-integrated decay - Estimate EDT, T20, T30, C50, and C80 by band - Map axial, tangential, and oblique room modes - Compare listening positions and treatment scenarios - Complete bundled sample and local comparison workflow - Local PDF report and Apple system share export - Original offline technical reference library ONE-TIME AND PRIVATE - One paid download; no subscription or in-app purchase - No account, advertising, analytics, tracking, or developer-operated backend - Core features and bundled content work offline - Work remains on device unless you deliberately share or export it through an Apple system interface Planning and education aid. Phone microphones, playback systems, background noise, placement, and calibration affect results; use calibrated measurement practice for design decisions.