Quilling.com

Great customer service! Thanks, Daniel!

We use this app to track profitability on the days we send email promotions with a discounted product. Since in this app we can see not only sales, but actual profit on that day, it helps us compare our various promotions to see which ones are the most profitable (rather than just bring the most overall revenue). The app works great, and when I recently had an issue with some reporting getting messed up (not SimplyCost's fault, but it was affecting the reports there) they fixed it for me immediately. Highly recommended.