Everyone's favorite irrational number is here and ready to be conquered! Try out the "practice mode" to work your way through the digits of pi, and then test your skills in the "test mode" where three strikes means game over. Like seeing the big picture? The "show me pi" page lets you immediately skim through thousands of pi digits to satisfy all of your nerdy needs.

Impress your friends (especially the cool ones!) and challenge yourself to learn as many digits of pi as you can.

Questions/suggestions? We'd love to hear them! -

What’s New

Version 3.0

Learn Pi is now open source! Feel free to check it out at:

This release also includes iOS 12 compatibility and support for new iOS devices. Thanks again for all of your support throughout the years, and keep learning!

Ratings and Reviews

4.5 out of 5
69 Ratings

69 Ratings

GleekKlainerCrissColfer ,

Reaching Goals

I've used this app for years. It helped me become the Pi Queen in 8th grade. I was at 100 digits. My love for pi faded over time, and I wanted to relearn it fast. I only was able to recite maybe 50 digits which to me was very sad. I was determined to get back to 100 quick. My current record is 114 digits. I like how there's strikes, but you can also turn them off. I like it because my hand will slip, or I'll be reciting numbers faster than my hands can type, so I'll press the wrong number. The best way to memorize that I've found has been memorizing by 3's meaning every 3 digits. Sometimes when I'm reciting the numbers out loud, I'll have to use my hand to place where the number is, but the patterns help. My goal is to reach 200 by my lifetime and I'm currently 16, so I don't think I'll have a problem. Good luck reaching your goals.

UPSY42q ,

Decent app

This app works better on an iphone than on an ipad. The number keys need to be larger for the ipad version (I have an ipad pro 10.5”), but they're perfect on my iphone 7 Plus. The biggest issue is that the alternate keyboard setting, which I assume inverts the order of the numbers to resemble that of a numeric keypad, doesn't work. As in, I tried switching it on or off and no difference occurs either way. Really the 9 at top right, 1 at the bottom left, with zero at center below 2 order SHOULD be the default as that's what people who are used to working with numeric keypad hardware are used to. I like that there is a practice mode that is forgiving of errors, which can occur on an ipad because the keypad is too small. I wish there was some individual sound or musical note that played with each number, and that there was more color overall. Still, I love the row of numbers that appears and the option to show or not show. Solid app, but on my ipad I prefer other apps that include the above mentioned features. This is my go-to for iphone though. It could be better, but at least fix the keypad please.

Gacsaly ,

Excellent Pi

If you want to memorize Pi this is the app for you. Easy, fast, fun, and it works. The free version has ads and if you miss zero you go to the ad AND lose your place 😠. Otherwise the free app is great.

The 99 cent version is worth it if you plan on getting to triple digits! The only difference is no ads while playing. I got to 200 digits in about a week.

I tried several Pi learning games and this was the best by a significant margin.


John Dugan
904.2 KB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2018 DuganSoft | John Dugan


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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