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Pi Brain

By Henry Chan

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** Need more features? Try Pi Brain+, which enhanced learning modes, digit up to 100,000, Game Center Leaderboard, iPad and iOS 7 support **

How many digits of pi can you remember? Since pi is an irrational number, the digits never end or repeat. You will probably never have to use more than a dozen digits in any calculation, so why learn the digits of pi? For some people this is a challenge. The Guinness record for remembered digits is 67,890 digits.

With this program you will have the opportunity to test your memory, and learn a universal number. Have contests with your friends and family. This is a great learning tool for all ages. You be surprised how much you can remember with a little practice.

There are a few user settings in the application preferences that you may find useful. The digits are broken into groups of ten by default.

The option to save the score will only appear if you do not make more than one mistake and do not use the hint or switch to the learn mode. Scores can be sorted by date, name, or score. Use this list to verify your retention over long periods.

What's New in Version 1.4

Fix keyboard problems in iOS 3.x

iPhone Screenshots

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Customer Reviews

Amazing 😵😵

Ok so I already knew 112 from 5th grade( I won against 6 graders too 😏😏) ok so this isn't about me it's about how amazing this app is so as I said I knew 112 but that doesn't matter you could know 2 but if you put time into it you can learn a lot more ( like me I learned up to 418 with this app)


I have only been using it for about 2 days and I already know 25 digits that's my highest score so far. I am trying to learn 50 ish digits before pi day which is 3.14 so which me luck

420 digits

Yes I know 420 digits, and in getting that high I've already become extremely quick with up to about 350. I don't need to practice those so if there was practice mode that would rock.

Pi Brain
View In iTunes
  • Free
  • Category: Education
  • Updated: Feb 09, 2011
  • Version: 1.4
  • Size: 0.3 MB
  • Language: English
  • Seller: Henry Chan

Compatibility: Requires iOS 3.1.3 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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