Sure, using every day.

You got great answers. I found some useful information for me too. 

If you Google this program and read reviews you will see many people complaining even saying it is a rip off,

I once considered Grammarly.

No experience with this program. Sorry.

It actually attempts to check your grammar (even the lite version).  I found it a little too intrusive for me.

MS Word checks mine for free, though I often disagree with Word;s opinion.

I just use a dictionary 

Never heard of it but will check it out. But I find that the spellchecks on the sites I use including AR work pretty well. Sounds like this app might also check grammar, right?

Spell check is fine if you don't have tow words that sound the same spelled differently and different meanings

Way easier to google proper usage of nouns, pronouns, punctuation usage,  etc., etc.,—rather than relying on a program to check for your mistakes.

I don't use it, but I applaud anyone who spell checks! :D

Spell checkers are everywhere, Sonatta, and they are free.  A

Sorry I have no experience with them.

Not used it.

Have not heard of them, but Noah's comment is interesting.

Hi I've never heard of that before 

No experience.  

Never used it. Rely on my gray matter!

none

I use no spell checkers and certainly wouldn't pay for it. I had three years of Latin, which set my foundation for being able to spell. I virtually never have to look up the spelling of a word.

 Good morning. I have not heard good reviews about the program.

Never heard of them.

Don'I know much about it. Though most word processors have built in spell check.