Numerical Audio SF-1 Filter App For iOS Is A Free Download For A Limited Time

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Stay at home and download for free the Numerical Audio SF-1 filter app for iOS with AUv3 support that lets you design a wide range of filtering effects. 

Kai Aras or better known as Numerical Audio announced today that his nice SF-1 filter app with AUv3 support for iOS is free until April 10th. With this gift, he wants to motivate musicians to stay at home but also to be creative. Thank you, Kai!

SF-1 is a dual stereo filter effect that offers 2 multi-mode filters (SEM & Ladder) with multiple filter types that can be run in series, parallel or one per channel. With a built-in LFO and flexible recordable XY-pad, you can work very expressively with this app. Here you can do everything from simple filter sweeps to advanced filter movements.

Numerical Audio SF-1


  • Dual Stereo Filter
  • 2 Filter Models: SEM & Ladder
  • 3 Filter Modes each: LP, HP, BP
  • Serial, Parallel or Channel Split Routing
  • Dual LFO with Tempo Sync
  • Envelope Follower
  • XY-Pad with Automation
  • Pad Lock and Pad-Engage/FX Release
  • standalone, AUv3, IAA & AudioBus (filter)
  • MIDI tempo sync & CC control

Numerical Audio SF-1 Stereo Filter app for iOS is available as a free download from the Apple AppStore until April 10th, 2020.

More information here: Numerical Audio

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