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.
Notcoin was the project launched on Telegram that rewards its users with the not token, as they are required to be tapping on their screen and earning some of those coins.
It was like a joke to many until Notcoin finally had a launchpad on Binance and got the coin listed, which brought about the popularity of all these tapping projects on Telegram, and they refer to it as minning instead of airdrop as it was supposed to be addressed.