We all love Recaptchas but do not like how ugly they are. One way to also weed out spam submissions to your contact page is to add a Math Challenge question.
The steps for doing this are the same for Gravity Forms as well as Contact Form 7.
- Add the Captcha field to your form. (Under Advanced Fields)
- Upload the Plugin Really Simple Captcha from the WordPress Plugin Repository and Activate it.
- Go back to your CAPTCHA field in Gravity Forms and Change the Type under the General Tab to Math Challenge
The plugin Really Simple Captcha integrates with Gravity Forms so that the Math Challenge is available as a Type of ReCaptcha.