Bloom on the iOs app store. https://apps.apple.com/us/app/bloom/id292792586
Someone's cloned Bloom: https://github.com/generative-music/blossom
Wotja too maybe. Here's their FAQ about rights: https://intermorphic.com/wotja/faq/#faq-recording-ownership
Wired can point you in more directions: https://www.wired.com/story/generative-music-apps/