<p><i>ModSynth</i> is a powerful modular synthesizer allowing construction of complex polyphonic instruments. Connect any number of oscillators, filters, delays and other synthesizer modules in a graphical editor. Adjust the settings of each module while playing the instrument to get a desired sound. Save as many instruments or variants of an instrument as you’d like. Ten built-in instruments are provided to help you get started.</p><p><b>NOTE:</b> This app is <a href='https://github.com/owingsbj/ModSynth/issues/38' target='_blank' rel='nofollow'>not receiving updates anymore</a>.</p><p>The free version contains the following modules:</p><ul><li>Keyboard</li><li>Pad (for theremin and &quot;scratching&quot; effects)</li><li>Oscillator</li><li>Filter</li><li>Envelope</li><li>Mixer</li><li>Amp</li><li>LFO</li><li>Sequencer</li><li>Delay (echo)</li><li>Output (with scope to see the sound)</li></ul><p>In-app purchase the full version ($5 US) to expand polyphony (from 3 voices to 10), unlock advanced capabilities, and access these additional modules:</p><ul><li>Arpeggiator for sequential playing of the notes in a chord</li><li>Melody for more complex sequences of notes</li><li>MultiOsc for strings and other chorus sounds,</li><li>Unison for more complex chorusing,</li><li>Operator for building FM synthesis,</li><li>PCM for sampled sounds (WAV and SF2 SoundFont files),</li><li>Reverb for simulating room acoustics.</li><li>Crusher for adding digital distortion.</li><li>Compressor to combine all voices and even the sound levels</li><li>Pan to direct sound to either left or right stereo channels.</li><li>SpectralFilter to control the spectrum of a sound with a bank of 25 bandpass filters</li><li>Function module allowing entry of an arithmetic expression for the module’s function</li></ul><p>The full version also provides the ability to record sounds to a WAV file.</p><p><i>ModSynth</i> has support for external MIDI controllers such as keyboards or DAWs, including mapping of c