Math Keyboard

Contains adsIn-app purchases
2,4
204 reviews
100K+
Downloads
Content rating
Everyone
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About this app

Keys are divided into different key-groups. The Criteri-R key-group targets the Criteri-R app. The User key-group allows users to define their desired key texts like macros. Alphabets and General punctuations and symbols are added for normal inputs.

Besides the common math input keys, on the keyboard there are a number of mutable keys whose contents can be changed to map to any keys in the selected key-group. Users can define as many keys as they need in the User key-group. In this way, Math Keyboard can be used to serve Criteri-R as well as other apps, e.g. Excel, WolframAlpha, etc.

Superscript and subscript counterparts, if available for a character, can be attained through the Shift key.

Through in-app purchase, more characters become available: arithmetical, Greek, arrows, brackets, mathematical, accounting, calculus, logical, set theory and multi-line characters. They will all be displayed on your device before you agree the purchase.

Remember to enable and select Math Keyboard in System Settings after installing.
Updated on
14 May 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Data is encrypted in transit

Ratings and reviews

2,1
193 reviews
Ishit Kumar
13 June 2025
Great app for maths/physics students It also consists of an option to make your own keys which helps in adding more mathematical symbols to your keyboard 🫡
4 people found this review helpful
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cos Im a Wood
07 October 2024
Really difficult to use, most of the symbols needed are locked behind a pay wall, forcing me to switch between the Samsung keyboard and the maths keyboard every 10 seconds just for it to not have the symbols needed. Caused more of a faff, then help, easier to copy the symbols onto your keyboard and paste when needed, at least that's all in one spot. When using at a college level, the price just isn't worth it. Thanks xx
3 people found this review helpful
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Ali Hassan
18 February 2023
The concept of this keyboard is ok but in practical this type of keyboard is not useful for Android users in any way. Maybe good for those who have a hobby of experimenting with different keyboards but other than that I don't see what I can do with it.
9 people found this review helpful
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Fairbird Innovation
22 February 2023
Thanks for your comment. Although the features may look common in one sense, Math Keyboard is designed to be a companion of our Criteri-R app, providing all the math functions that it recognizes. Math Keyboard is released as a standalone package rather than being bundled with Criteri-R, in order to give flexibility to users.

What's new

Rebuilt with package updates.