Caelestis is a sample based generative music app that creates unique and very interesting results. It uses bouncing balls that generate notes as they bounce off the walls of the three different shaped rooms. The sound balls can be initiated at any velocity, and the shaped rooms can be rotated at different speeds to create interesting combinations. Each sample can be pitched by semitone increments, and assigned to one of three octave ranges. It is a free app with a $0.99 in-app purchase for importing and exporting samples and recordings. I should note that all file management is accessed through the Audio Copy section, and for referencing tempo, you need to run a drum app in the background. But I have to say that I find this app to be very impressive, with a great range of features, and it’s very easy to use. The unique layers of sounds and rhythms really make Caelestis … A Killer App!
Review by Nick Trass