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Version 2.0 for iOS
Handwriting Recognition of Math Symbols on the iPad and iPhone

Know This Symbol?

Phi is one of 524 symbol-meanings in Knowtation's database. There are 47 other categories.

With Knowtation, you can:

  • draw a symbol, see what it is called, and learn its meaning
  • scroll through symbols and letters organized by category, and
  • click on a Greek or Latin letter to get more information about how it is used in math and science.


You can add symbols to Knowtation's database. All submissions are manually curated before being distributed to users. Contributors get acknowledged below!

Add Symbol


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Data provided by Wikipedia contributors.

Contributor Leader Board

  1. Byron Lee contributed 472
  2. Jeff contributed 52