Sigmakey: Math Keyboard
by Andrii Bashta more by this developer →
First seen by this census 09/05/2026 — the store does not publish a creation date
Last updated 08/06/2026
Tracked since 09/05/2026
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Category: Utilities
Description
Sigmakey is a math keyboard for people who need to type actual math, anywhere you can type at all. Fractions, exponents, roots, Greek letters, and matrices sit one tap away, and the cursor moves right into a numerator or an exponent, so scientific notation looks the way it should.
- A full math keyboard layout that works in any app with a text field
- A two-dimensional field with a cursor that steps into fractions and powers
- Type LaTeX, plain Unicode, or a rendered image, whichever the app expects
- Everything typeset on device, with no network
- Search for a symbol, or grab a recent or a favorite
Drop an equation into a note, a message, or a homework app without hunting through menus.
Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vTDX9pxPOlUJl_skVUHPi99mAw0y2B2BYd_v1mJkoF3xW3rlOcW5KlYd4t93MMbbGhctSTnBTy7d_l6/pub
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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Growth
Change in ratings, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.
| Per | Growth | Growth % | Actual change | Measured over |
|---|---|---|---|---|
| day | Not enough history yet | |||
| week | Not enough history yet | |||
| month | Not enough history yet | |||
| year | Not enough history yet | |||
History
Tracking since 09/05/2026. History accumulates as changes are observed — check back soon.