Spellchecking by humans is more expensive and not instant. Grammarly is something between the classic software spell checkers and professional human spellchecke

Spellchecking by humans is more expensive and not instant. Grammarly is something between the classic software spell checkers and professional human spellcheckers. Producing well-written documents is essential if you want to appear competent and professional. Using tools is helpful, especially when you are not a native speaker.