still (!) must use v10.5.0 on iOS 10.3.3
UPDATE: I've tried v10.8.0 and now v11.1.0, and neither of them works; also, your Dual Web Browser has the same problem. This WAS a nice little utility program that I would use a few times every week for planning my schedule, but these updates killed it for me. This probably has to do with the fact that I'm still using iOS10, but now every time I try to run it, it immediately loses focus, and refuses to come to the foreground. Luckily, I managed to get the old version back, but most people wouldn't have a way to do this.