$BTC.X I looked into the PI network coin and it's very interesting. You can "mine" for it on your android or iPhone and it doesn't drain your battery at all. Instead of using power to generate it uses security circles. Everytime the user base grows, a halvening for it happens. Not on exchanges yet but will be available soon. It's called pi network on the app store but you need an invitation code. You can use code "allen2173" to get into this project. Pretty interesting so far and it's growing pretty quickly so the longer you wait the harder it is to mine.