The Free Offers Add-on for iThemes Exchange allows you to offer any of your products for free.
Once you’ve installed and activated the Free Offers Add-on, you’ll see Free Offers in your Advanced Options.
From here, you can hide your product price from the store and product pages. This keeps the word “free” from showing where your price would be.
You can also change your “Buy Now” button text and “Purchase” button text to match the free offer.