SquareAcid by James Navarro
SquareAcid by James Navarro

SquareAcid by James Navarro

The app is not a pure emulation, so it has its own sound, but it wins on the analog feel. The way the knobs respond when tweaking the filter and resonance feels “more analog” or “more rubbery” than other apps. It captures the specific way a 303’s filter interacts with accents and slides, allowing you to create “new rhythms” just by turning a knob. It runs as a standalone app with AUv3 support on iPhone and iPad, integrating into hosts like GarageBand or AUM for iPad music production.

While the sound may not match the purest emulations, the tactile response and interactive filter behavior make SquareAcid particularly inspiring for live tweaking and experimental acid lines. The clean interface and distortion effect add to its appeal for producers seeking characterful bass in mobile workflows.

Key features include:

  • TB-303 homage with fierce resonance and responsive filter
  • Interactive knobs that create new rhythms through accents and slides
  • Distortion effect for added grit
  • Standalone and AUv3 compatibility on iPhone and iPad

App price: $6.99
In-app purchases: None


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