shapesynth 4+

Erik Sigth

    • 5.0 • 19 Ratings
    • $4.99



Shape is a polyphonic synthesiser allowing the user to draw the shape of the oscillator waveform. The first half of the oscillator is represented by 32 blocks and the second half is its mirror, generating all sorts of possible raw retroish sounds. 16 pages per oscillator allows to interpolate between different shapes. Add effects like arpeggio, stereo delay and a resonant filter and record your sounds on a classic tape. Modulate any parameter with keyboard, MIDI MPE or the device accelerometer. Connect to other apps with AudioBus, IAA, AUv3 and midi.

+++ 16 voice polyphony
+++ 2 oscillators, draw your own shape
+++ 3 oscillator mixing functions (add, subtract or multiply)
+++ Lfo modulation with ADSR: envelope, pitch, duty cycle, square, page or filter
+++ Record on tape with infinite overdubs (save, load, import, export)
+++ Arpeggiator
+++ Stereo delay
+++ Resonant filter (low, band and high pass)
+++ Modulate any parameter using keyboard, MIDI MPE or accelerometer (Built in or Sphero)
+++ Mini linear sequencer with euclidean rhythm
+++ On screen 25 key stylophone style keyboard
+++ AudioBus, Inter App Audio and AUv3
+++ Ableton link or AUv3 host sync
+++ CoreMIDI, IAA MIDI, Bluetooth MIDI, limited MPE and MIDI out
+++ Audio Paste, files app drag’n drop or open with

What’s New

Version 4.2.10

+++ Exposing user presets to AUv3 host.
+++ Minor UI fixes.

Ratings and Reviews

5.0 out of 5
19 Ratings

19 Ratings

Ben Efitofadoubt ,

Erik The Great does it again!

First class updates to a first class app from a first class developer.
Get them all! What are you waiting for?

SynthyMiranda ,

Awesome Update!!!

I always loved the sound of Shapesynth, but could never wrap my head around the minimal and confusing interface. But this update basically restructures everything--it's virtually a new app. The developer has grown and grown, I think. His more recent apps like Elsa and Strng are brilliant, and I think all that experience has been applied to reinvent Shapsynth! So nothing but mad props from this girl! 😊

JRSIV1975 ,

Erik's update makes it a whole new app

Erik Sigth's apps are some of the most unique iOS music production tools around. They all have a GUI that admittedly one likes or doesn't like most of the time. If there are indicators to what a control does or at least a manual or help (?) option I don't mind the layouts. Thing with the old version of the shapesynth was trying to make patches while using such a bare interface did cause problems. Now that things are labeled and laid out better, the synth is a joy to play.

And a totally unheralded aspect of this synth is the brilliant recorder. For an old analog dude who learned on Tascam PortaStudios there is the joy of seeing the little tape graphic and some of the more tape oriented controls. The real use of the recorder should be explored, most synths get AudioBussed or AUMed out to a DAW like Auria or Cubasis, this recorder can allow you to make some cool experimental soundscapes and then manipulate them further on in a DAW or app like Samplr. Just a great app for under $5 and incredible at just $2.

App Privacy

The developer, Erik Sigth, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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