Swym Back in Stock Alerts

I started using this app last week, and I can say it is a great app so far. I am using the free version, and it is quite complete for what I need to use now. Besides, I had some doubts setting the button at my homepage and the customer service was so helpful and nice, and most important, they came back to me in just a few hours. So if you are looking for a Back in Stock button, I would highly recommend this one.