HappyKey provides you with a simple keyboard with many useful math symbols. It will fulfill all of your math needs with numbers, superscripts, pi, math operators and relations, infinity, and beyond.

HappyKey works with Happy Grader (, allowing you to be even happier when grading exams. Happy Grader is a PC application that helps teachers grade happy by automating the grading process while utilizing Google Forms and Microsoft Excel. Students can enter answers to their math tests with HappyKey, and teachers can be sure that there will be continuity across answers, since all students will be using the same keyboard characters.

Install the app first, then to setup the keyboard go to Settings > General > Keyboard > Keyboards > Add New Keyboard > HappyKey

Credit for the keyboard functionality and design goes to the open source Tasty Imitation Keyboard by Alexei Baboulevitch (GitHub user archagon).

What's New

Version 4.0

Rebuilt from the ground up!
New icon and user interface
The long awaited multiplication sign (×) is finally here! Just long press on the multiplication dot (•) to select it.

Ratings and Reviews

Where is it

Baja blast king

Either I can’t find it or it isn’t there but I wish there was a division symbol

This App makes my life so much better


This app I just amazing. Every math symbol is here so I can now do all my homework on my phone. This app is the best math app there is and it makes people's life way better.

Has potential

AT Support

This app has potential to be a great resource for students in school to support math recording. However, the multiplication symbol need to be a "X" rather than a dot. With this simple adjustment, it could be a very valuable tool for students to record math on the iPad.


Alex Baratti
10.4 MB
Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 Jeff Simon Software


  • Family Sharing

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

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