Mining? I don't know that coin, but I highly doubt it's mining, because for mining you need to use processor, hence more electricity. An app that runs on a phone, for example, will not do real mining because it would drain the battery too fast and you'd uninstall it in the second day.
This being said, I expect that such "coins" would rely mostly on gathering data about the users, maybe sell it, maybe give back some cents to the community, usually as a reward for even more personal data, see Pi Network, or how it's called.
Its future? As long as there are enough desperate people who give out all their info for mere nothing, this can work. If ever people get conscious on how dangerous is to give out their info to random thirrd party, this will will end. But not too soon, I guess.
Rather, it's just a form of marketing that the project developer launches to attract community interaction. I'm really amused by the confusion and exaggeration with these types of projects in space. But don't worry too much because they always have opportunities/risks for the participants. However, for projects approaching this type of format, it is just a marketing ploy exaggerated by NOTCOIN. Or in another way, the interest in TON and this has also been clearly seen in many other ecosystems in the past in terms of being given a new form to attract the attention of the community.