HappyKey

Name: HappyKey
Rating: 3.7 (9 reviews)
Author: Alexander Baratti

Math notation made easy!

Free

9 Ratings
Age Rating

4+
Years
Category

Education
Developer

Alexander Baratti
Language

EN
English
Size

27.5
MB

HappyKey provides you with a simple keyboard with many useful math symbols. It will fulfill all of your math notation needs with numbers, superscripts, pi, math operators and relations, infinity, and beyond. Install the app first, then to setup the keyboard go to Settings > General > Keyboard > Keyboards > Add New Keyboard > HappyKey Note: This is not a calculator. This is an additional keyboard that makes it easier to type math notation. Credit for the keyboard functionality and design goes to the open source Tasty Imitation Keyboard by Alexei Baboulevitch (GitHub user archagon).

Ratings & Reviews

3.7

out of 5

9 Ratings

Where is it
03/12/2018
Baja blast king
Either I can’t find it or it isn’t there but I wish there was a division symbol

Developer Response
Hello,The division symbol is accessible by holding down on the / key and releasing on the ÷ key. Thanks for using HappyKey!
Where is it
03/12/2018
Baja blast king

Either I can’t find it or it isn’t there but I wish there was a division symbol
Developer Response 09/17/2018
Hello,The division symbol is accessible by holding down on the / key and releasing on the ÷ key. Thanks for using HappyKey!
Free and Great
04/11/2024
Evan42052
I was scouting the internet for hours looking for a free keyboard that uses math notation and couldn’t find any that weren’t a few dollars, a subscription service or upwards of $24!!! This app is free and works perfectly! I wish there were differentials and integral symbols but I digress this is an amazing keyboard that adds super- and subscript functionality FOR FREE! Along with a few nifty math terms! I love it!
Free and Great
04/11/2024
Evan42052

I was scouting the internet for hours looking for a free keyboard that uses math notation and couldn’t find any that weren’t a few dollars, a subscription service or upwards of $24!!! This app is free and works perfectly! I wish there were differentials and integral symbols but I digress this is an amazing keyboard that adds super- and subscript functionality FOR FREE! Along with a few nifty math terms! I love it!
The tiny numbers are where?
05/30/2019
Mnator
On the App Store, the second screen shows much smaller numbers that I assumed would be superscript or subscript numbers. But on my phone it’s all large numbers, with the clunky way of using the ^ symbol to make a superscript that still is just a large size number.

Developer Response
Hello,To access the superscript or subscript numbers, tap and hold on the full-sized number on the first screen. You should see a pop out that shows the number with superscript and subscript options. Release your finger over whichever option you want to type. Thank you for your feedback and for using HappyKey!
The tiny numbers are where?
05/30/2019
Mnator

On the App Store, the second screen shows much smaller numbers that I assumed would be superscript or subscript numbers. But on my phone it’s all large numbers, with the clunky way of using the ^ symbol to make a superscript that still is just a large size number.
Developer Response 05/31/2019
Hello,To access the superscript or subscript numbers, tap and hold on the full-sized number on the first screen. You should see a pop out that shows the number with superscript and subscript options. Release your finger over whichever option you want to type. Thank you for your feedback and for using HappyKey!
Where is it
12/29/2025
Msn202222
I can’t find it the letters THE LETTERS but love the app though!
Where is it
12/29/2025
Msn202222

I can’t find it the letters THE LETTERS but love the app though!

App Icons Change the app icon from a selection of alternate app icons. Minor Improvements Bug fixes and changes have been made to improve the app's experience. This update improves support for iOS 27.

Version 5.2 Sep 12

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

Information

Seller: Alexander Baratti
Size: 27.5 MB
Category: Education
Compatibility: Requires iOS 17.6 or later.

iPhone
Requires iOS 17.6 or later.

iPad
Requires iPadOS 17.6 or later.
Languages: English
Age Rating: 4+

4+

Learn More