It took me quite a while because the app is complex, and I needed to implement the mobile UI, which when it comes to phones can require a new thinking because of the small real estate. I found myself using several views instead of single windows.
That said, now that it is done, I do enjoy nice sales in both the App Store and the Play Store. Since Xojo did not have Android, I went to another Basic, but when Xojo Android comes to be, that is a great opportunity, and hopefully API 2.00 will make it easy to go from iOS to Android.