This is an interesting list, and I've annotated it with a few thoughts of my own (see below).
"This are my favourite releases in 2015. I consider in majority only releases from 2015 and two updates from apps released in 2014.
If you missing Nave and other synths, please consider that the choice is only for Synths released in 2015. This choice is only my favourites and maybe you have another selection.
The included apps are available here:
- SoundScaper (agreed)
- Fieldscaper (agreed)
- KV331 Audio Synthmaster Player for IOS (not sure)
- ApeSoft iDensity v.2 (agreed)
- Borderlands Granular v.2 (agreed)
- Virsyn Poseidon (not sure)
- WizDom Music GeoShred (not sure)
- IceGear Instruments Lorentz (agreed)
- Sugar Bytes Cyclop (not sure)
- Korg iM1 (not sure, I'd have gone for the iDS-10)
- BitCount AnalogKit (agreed)"
Video published by Synth Anatomy.