Whether it's for SEO, payment plans, conversion optimization, inventory tracking, customer reviews, or anything else --- I'm curious which apps people recommend the most. Hopefully most are free!
I'd love to know:
1. What platform you're using
2. What your favorite app or plugin is
3. What the app/plugin does
4. Why you love that app/plugin so much (why it's special in your eyes)
Thanks in advance for the answers and recommendations!