StringLab 4+

Digital String Modeling

    • 4.1 • 8 Ratings
    • $14.99



Added an MPE keyboard to standalone mode.
You can now lock the both keyboards on the iPhone in standalone mode.

StringLab is a physical string modeling synthesizer based on Karplus-Strong theory. It is capable of reproducing the sounds of many different types of instruments, but is especially useful in the reproduction of hammered or plucked strings and other types of percussive instruments.

It works by passing carefully crafted waveforms and short bursts of white noise through a series of tuned delay lines. The delay lines have an internal feedback loop with a series of filters to mimic the natural decay of harmonics found in a real instrument. StringLab allows you to discover the character of real-world accoustics, exploring the physics of how materials interact. Many new and original textures are born out of experimenting with the settings, so don't be afraid to experiment and create your own unique and dynamic instruments.


•Karplus Strong based physical modeling.
•Exciter Impact with multiple modes.
•Exciter Noise with many envelope driven filters.
•2 resonator objects with feedback.
•8 bands per object with inversion.
•4 Coupling modes.
•Supports Frequency Dispersion.
•Feedback low/high Damping.
•Per object Body Filter.
•Pitch Deformity.
•External live input mode.
•Preset randomiser.
•Build it Preset Manager & Favourites.
•Search Presets.
•Drag & Drop preset export of presets.
•Supports Color Sets.

What’s New

Version 1.0.5

Added an MPE keyboard option for standalone mode.

Ratings and Reviews

4.1 out of 5
8 Ratings

8 Ratings

petemuzak ,

Great app but it needs CC mapping

Really nice app but I am surprised you don’t have any provision to map CC controls with it. I play a windsynth controller and this is a must need for the synths I use. I am aware I can probably map parameters in AUM and use Loopback to get the audio into Logic but that introduces more latency. Hope you can add CC mapping to this app and Copperhead (also a great synth)

Developer Response ,

Unlike typical synths based on additive synthesis, this app uses Karplus Strong which is based on delay lines and feedback loops. This can soon get out of control I give external access to some controls so I have imposed limits in the initial release. I am introducing some CC control into the next version of the app, but only those parameters that are safe to do so.

Lil Woodryc ,

Being Honest

There’s no sound to this on this plugin

App Privacy

The developer,, 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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