Syntorial's built-in synth, Primer, has been updated to include 157 new presets by Spidericemidas (designer of preset packs for Sunrizer, AudioKit Digital D1, Kaspar, and Mitosynth). Presets include Basses, Drums, FX, Keys, Leads and Pads.
A VST3 version of Primer is also available for Mac and PC.
Primer for iOS is available free in the App Store. Primer for Mac/PC is included with the full version of Syntorial.