Math Input

Hod Publishing

About this app

Put mathematical notation at your fingertips.

Math Input is a specialized Android keyboard for entering mathematical Unicode symbols directly into notes, messages, documents, forms and other apps. Switch categories from the keyboard and type the character you need without repeatedly searching the web or copying and pasting.

Eight focused keyboards:
• Common Math - operators, comparisons, roots and everyday notation
• Greek - uppercase and lowercase letters with alternative encoded forms
• Calculus & Algebra - integrals, large operators, differentials and number sets
• Logic & Sets - quantifiers, connectives, membership and set operations
• Arrows & Geometry - directional arrows, mappings, relations and shapes
• Fractions & Units - precomposed fractions, fraction-building characters, units and selected constants
• Superscripts - digits, supported letters and operators
• Subscripts - digits, supported letters and operators

Built for practical input:
• Hold compatible keys for ASCII alternatives or related encoded forms
• Choose your preferred Greek character forms
• Explore symbol names, references and variants in the built-in guide
• Switch to a Latin keyboard with accented-character options
• Hold Space to move between symbol categories or choose another system keyboard
• Work offline with no ads, analytics or tracking

Math Input does not collect, store or transmit what you type.

Math Input produces standard Unicode text. This makes symbols easy to copy, search and use wherever the receiving app and its font support them.

Please note: Unicode characters are not a complete equation-layout system. Matrices, stacked fractions, limits, indices and other two-dimensional notation may still require an equation editor or a markup system such as LaTeX. The appearance and availability of some characters depend on the font used by the receiving app.

What’s new

Initial release of Math Input.

• Type symbols across eight focused keyboards: Common Math, Greek, Calculus & Algebra, Logic & Sets, Arrows & Geometry, Fractions & Units, Superscripts and Subscripts.
• Hold keys for useful alternatives and encoded forms.
• Explore names, references and variants in the symbol guide.
• Switch categories directly from the keyboard.
• Private, offline input with no ads or tracking.