Calcophony

A scientific calculator for composers. Tempo, pitch, rhythm, duration — computed precisely, on-device.

Modules

Tempo Modulation

All tempo relationships from a source BPM.

Metric Modulation

Multi-step paths between two tempos.

Rhythm & Subdivision

Durations and groupings for any tuplet.

Frequency & Pitch

Hz, pitch name, cents, and MIDI conversion.

Duration Calculator

Note values to milliseconds and timecode.

Metronome

Customizable click with accent patterns.

Pricing

Free

$0

  • 2 modules included
  • All atmospheric effects
  • No account required

Pro

$9.99 one-time

  • All modules unlocked
  • Future modules included
  • No subscription