Pi is constant, it is represented by the Greek letter π. The numerical value of π is 3.1415926.......

Pi is infinite series irrational number.

From wikipedia:
Piphilology is the practice of memorizing large numbers of digits of π, and world-records are kept by the Guinness World Records. The record for memorizing digits of π, certified by Guinness World Records, is 70,000 digits, recited in India by Rajveer Meena in 9 hours and 27 minutes on 21 March 2015.

This app is a tool to help you memorize pi digits.

Add network competition mode, if all the devices are connected same local area network. You can create a network competition up to 5 people play on same time.

p.s. If you have trouble to create the network competition, you need to check your firewall setting. It need allow incoming connection.