Their design is excellent. Behind the scenes its very technical, but the user experience is smooth and easy on the eyes. It does such a great job of taking actions and information in one app and bringing it to your app of choice.
For extensive users, pricing model is not so friendly. But other than that, it's very user friendly. You don't need any programming background to create Zaps Zapier also has great amount of support document to help you get going and be creative. Great product.