This is my second HDR app along with Pro HDR. I love how simplistic the UI is. It looks clean and flows well with iOS 7/8 style. It is also Very Fast at taking good HDR photos,probably the fastest and does it much better than Apples HDR option.
The downside is I have dealt with alignment issues even on stationary objects. Another problem is there is only 4 filters to choose from and no other fine tuning adjustments. The last problem I found recently when trying to organize my photos is it does not record any EXIF data, which is important to me. if you dont care about those issues then give this app a try.
RYMAH about HDR