I looked at both apps and so far no devs on WP know how to make a hdr app. This is very upsetting. I've been emailing my pictures to myself and just using my iPhone that has 19192881 hdr apps. I understand taking 3 images at different exposure is the proper way to do an hdr image but there's software out there that's cable of making hdr images using just 1 picture and making the adjustments through sliders. This option is much better when using a phone. Even instagram has a one button hdr like feature.
No, software that does it with 1 image is just filtering it to make it look kinda like an HDR photo. Those are actually available on WP8, but they are not HDR. A lot of the photo editing apps on WP8 have an HDR filter, but its not really HDR.
If you can do it with 1 image without exposure bracketing, its not actually HDR and you do not have the flexibility or capability real HDR has.
I thought HDR Photo Camera was okay, it was good enough
I know a 1 click hdr isn't real hdr but the software hdr filters do a great job at it. On my PC I normally use topaz adjust which works great. The apps on WP8 don't seem to give the photos that hdr pop . The contrast and saturated colors that looks like a painting. I live me some topaz adjust