Recommend checking out the Koru system. It's an evidence-based mindfulness system out of the Research Triangle.
Regardless, the Monroe Institute already performed groundbreaking research in this area 50 years ago. I don't have a source at the moment, but I remember reading that the Monroe Institute's binaural beat audio programs creates brainwave patterns similar to that of an advanced Buddhist monk in meditation.
Apparently, the Monroe Institute discovered that the elevated mental states achieved by these monks is achieved with brain hemisphere synchronization, which they call "Gateway Hemisync." According to the Monroe Institute, "this process uses pulses of sound to create in both brain hemispheres electrical wave forms simultaneously equal in frequency and amplitude. The Institute was granted a patent in 1975 based upon the use of such sound pulses to induce a frequency following response (FFR) in the human brain. The FFR demonstrates that when you hear a certain type of sound, your brain tends to respond to, or resonate with, that sound...Each ear sends its dominant nerve signal to the opposite brain hemisphere...By sending separate sound pulses to each ear (using stereo headphones to isolate one ear from the other), the halves of the brain act in unison to “hear” a third signal, which is the difference in frequencies between the two signals in each ear" [1].
A group in the US Army performed a serious analysis of the Gateway Hemisync process, concluding that "there is a sound, rational basis in terms of physical science parameters for considering Gateway to be plausible in terms of its essential objectives", which include "out-of-body movement", "terrestrial information gathering trips", and "possible encounters with intelligent, non-corporal energy forms when time-space boundaries are exceeded" [2].
The article is talking about scientific validation of meditation and its outcomes. That's not to say we should blindly accept the claims of those scientists, the Monroe Institute, or the US Army. The key is to follow the evidence while remembering that greed and prestige is what's causing the "McMindfulness" effect.
Smartphone apps will be most useful for personal guided meditations, but they should be freely available.
[1] https://vdocuments.net/the-gateway-experience-guidance-manua...
[2] https://www.cia.gov/readingroom/docs/CIA-RDP96-00788R0017002...