Matthew Caldwell has created something genuinely opinionated and cryptic in the best possible way. At its heart it’s a tremolo, but the extra modulation options turn it into a creative tool that can add gentle pulsing colour or completely reshape your sound. It works as an AUv3 effect (no standalone mode) in hosts like AUM, GarageBand, Logic Pro for iPad, or Cubasis, and runs smoothly on both iPhone and iPad. Because it’s 100% free with no ads, no in-app purchases, and no tracking, it feels like a genuine gift to the iOS music community.
Many early users are already calling it “a tremolo with ideas above its station.” The modulated filters and delays give it a character that sits somewhere between classic tremolo pedals and experimental effects processors. It’s especially useful for adding rhythmic movement to pads, guitars, or synths without needing multiple plugins. While the interface is minimal and sometimes cryptic, that’s part of its charm — it rewards experimentation and rarely sounds generic.
Key features include:
- Core tremolo with modulated filters, delays, and saturation
- Multiple modulation options for depth and movement
- AUv3 effect plugin (no standalone mode)
- Clean, low-CPU performance on iPhone and iPad
- 100% free with no ads or tracking
App price: Free. No in-app purchases.
Original release: March 2026 | Latest update: March 2026
