Drawing on its teachings and principles, the original Buddhify app features 80 guided meditation exercise audio tracks custom-designed for work, going to sleep, de-stressing, travelling and more.
These aim to help you develop calm and compassion, even in the midst of a modern working life.
Along with the exercises, you get detailed graphics and statistics that provide feedback of your usage and progress, a "solo timer" when you want to meditate without guidance, special sections for dealing with pain and difficult emotions, and a chance to put any questions to a team of experts.
The re-booted Buddhify 2 brings tips and tricks to optimise your meditation practice and 40 custom-made new audio exercises.
The app has won Gunatillake a slew of awards, and in 2012 he was named by popular tech magazine Wired as one of 50 people who will change the world.
Gunatillake wrote in Wired how a "mainstreaming" of mindfulness, scientific advances around meditation and the emergence of contemplative technologists would bring us a new wave of digital tools that not only reduced stress, but led to "genuine insight, wisdom and compassion".
Buddhify is available on iOS and Android, and some features vary.