DaisyBouquet is a collection of apps, including a Granular Synth, a Sample Player and Cloudy Reverb.
This is the open source reverb from Rings/Clouds from Mutable Instruments, Emilie Gillet (MIT license)
The simple framework also includes a dummy app as starting point, with encoder support and print output on screen.

You can get the bin file and sources here:
See also https://github.com/erwincoumans/DaisyCloudSeed/releases/tag/daisybouquet