Pi currency is virtual currency. The full name of PI currency is PiNetwork, which is a virtual currency network similar to Bitcoin and Ethereum, and was developed by a doctoral team at Stanford University. Pi aims to build a blockchain network that everyone can participate in, because Bitcoin has deviated from its original intention and become a speculative tool for capital. The mining of Bitcoin, Ethereum and many digital currency is too concentrated because of the high threshold, which makes most users unable to participate. The common coin distribution accelerator software is PiAssistant, which is a very popular coin distribution accelerator software. It helps users to speed up mining by providing automatic click function. Coin distribution toolkit is another highly regarded coin distribution accelerator software. It provides a variety of functions to speed up mining, including automatic clicking, automatic coin collection, automatic invitation of friends and so on.