Just not quite there

I want to like and use this app but I find the controls difficult and especially I find opening an Olympus ORF file (gave up on DCRaw) really tedious to the point Im not using the app at all. Ive updated to IOS 8.0.2 Ipad Air, 128 GB.

Addendum:
Using iPad Pro 12" Ios 9.3.1. Find it crashes with RAW + jpeg, opens with RAW only. I like using this because I can use Pencil with masks, but need bug fixed. Controls are reasonable tho unconventional at best.

To answer reviewer that said no undo--there is a history in the opening menu. You can go back to whatever edit, clear back to original using the history.

Picnicmetoo about Filterstorm Neue, v1.4