Apps similar to Keys to Infinity include Brain.fm. It's paid, but Generative.fm is free. Other options are Focus@Will and Endel. In total there are four Audio Players like Keys to Infinity for the web, Android, iPhone, iPad and self-hosting.
Brain.fm converts auditory neuroscience into personalized brainwave training programs. Backed by years of research, the service uses highly customized profiles to generate audio experiences that help you sleep, relax and focus.
United States
Generative.fm is a collection of endlessly unique ambient music pieces composed generatively for continuous play without repetition.
United States
Focus@Will has tens of thousands of hours of unique brain music to help you control your ADD. We create scientifically optimized music to help get you in a focus-flow state faster, and longer.
United States
Endel creates endless soundscapes to give your mind and body what it needs to achieve total immersion in any task. Use Endel to relax, concentrate, and minimize distractions and brain fatigue.
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