Grammarly is the best spelling and grammar checker around. Apart from being able to find correct errors other grammar-checking. it will also help you optimize your text and make it more readable in the correct format. Make it a habit of using Grammarly while writing your content.
The application is lengthy, complex sentences and common errors; if you see a yellow sentence, shorten or you can split it. If you see a red highlight, your sentence is so is complicated that your readers will get lost trying to follow. these are the best content writing tools which I refer to all my user.