Well, the idea of Sweatcoin is interesting. While mining of bitcoin requires great electricity capacity, Sweatcoin allows you mining when you are walking around. However, Sweatcoin isn’t cryptocurrency but a digital currency. It doesn’t have blockchain, but it’s possible to buy goods with the coins. The plans of developing a blockchain for Sweatcoin and its listing to the crypto exchanges are still the plans. They don’t even mention when it will happen. Although the app can motivate people to track the steps to convert into digital currencies, the fact that it collects the personal information and other disadvantages you mentioned don’t speak in favor of Sweatcoin.