Same here.
After try Enpass in my Mac at home and the portable version in my Windows at work, I like Enpass so I went to AppStore and install Enpass on my Iphone 5s (IOS 8.12) and always crash on launching just after showing the blue screen with the Enpass logo.
If I can get it running on my Iphone I'll use it for sure and I'll send you some things that I don't like (solving can/will be improvements of your app).
Thank you.