Pi Network
 is building a peer-to-peer marketplace where our members will be able to directly spend Pi to buy goods and services. As soon as Q4 2019, we plan to begin experimenting with Pi in-app transfers. On crypto-currency markets, swap Pi for fiat currency.. Right now Pi Network is in phase 1 of development, so you are limited to just mining. In-app transfers (an internal exchange) and a listing on an external exchange for additional transactions (Pi-USD/BTC/etc.) should be included in step 3 (around Q4 2019 - Q1 2020).

The app does not provide any utility to its users. ... Users are putting value into the app. There are hundreds of posts online saying 
PI Network can not be a scam because you do not put any money into it.The time and data of users are important to those users and they spend it on the app.Today its price is $0.01064803. Pi network is 100% safe at moment. To be clear enough, the PI network is in its beta phase where the network growth of the test net is in progress. the pi network is the fastest growing network with the 7+million user at moment. The only crypt token that's mined through the phone app is the PI network.