Teribble, the app stops working I saved and refreshed because the app stoped and my calculator disapered
At first sight this app seemed promising, but after a couple of months' use I must conclude that it is simply not reliable. From time to time the calculator has given our customers false (too low) prices - so we lose money on the orders. In total we have lost more than $3,000 on prices calculated too low!! Do yourself a favor and choose another calculator app.
We are very sorry to hear about your experience and we have contacted you so we can work together to see how we can fix this situation.