MathMagic Lite is one of the best free WYSIWYG equation editors on the planet.
MathMagic Lite lets you write any mathematical expressions and various scientific symbols easily and then use them in your word processors, presentations, web contents, technical publications and more.
MathMagic equation image can be opened and edited again.
MathMagic Lite for iOS runs on iPhone and iPad running iOS 6.1 or higher.