Caustic is described as 'music creation tool inspired by rack-mount synthesizers / samplers rigs. Everything is real-time and optimized for mobile devices' and is a Music Production App in the Audio & Music category. There are more than 50 alternatives to Caustic for a variety of platforms, including Mac, Windows, iPad, Android and iPhone. Most alternatives are Music Production Apps and Audio Recorders. The best alternative is LMMS, which is both free and Open Source. Other great apps like Caustic are FL Studio (Paid), Reaper (Paid), Live (Paid) and Logic Pro (Paid).
FL Studio (originally known as FruityLoops) is a full-featured Digital Audio Workstation (DAW) offering a complete range of professional tools for everything from audio editing and beat creation to advanced arrangement, composition, mixing and mastering.
Logic Pro lets you translate musical inspiration into professional productions. A range of powerful, easy-to-use features puts sophisticated tools at your fingertips, and complete surround support lets you make incredible, immersive music.
Reason is a virtual studio rack with all the tools and instruments you need to turn your ideas into music. And it's more than just a set of excellent synths and effects. It's a complete music system. Step into the age of Reason.