What are some alternatives?
When comparing AudioKit Synth One and Splice Beat Maker, you can also consider the following products
Sampulator - Make (and record) beats on your keyboard
Ableton - Music production software and hardware.
Ramsophone - A generative art/music machine. (Be sure to refresh!)
Hover Camera Passport - This self-flying camera drone is the new selfie stick
BlokDust - Join blocks together to build sounds with this web-based music making app.
Mubert - Electronic music generated in real-time just for you