The negative comments here come mostly from people who are not the target group anyway. This software is aimed at professional photographers and enthusiasts. These are people who have already spent several thousand dollars on their equipment and who are willing to make a certain additional investment to get good results from their photos. Or do you think people spend $5000 on camera, lenses, filter, tripods, etc. and then complain that they can't get this app for $4.99?
I bet that the people who comment here that they want to buy the app for $4.99 have never shot a single RAW image in their life anyway, so why should Adobe care about their opinion? And yes, there are lots of people who don't want subscription based software. Still, Adobe appears to be making a lot of money. Why is there such a discrepancy between comments and reality? Because complainers are always more vocal.
Sorry to burst your bubble, but I'd be one of those.
I'm an enthusiastic hobbyist. I spend good money on my glass & my equipment, but I also research & buy what I can afford. And yes, I'd rather spend hundreds to thousands on good equipment (and then practice, practice, PRACTICE) to get it right the first time, than spend hundreds to thousands on a post-production piece of software to hide problems. Don't get me wrong: I'm not against post-production. I shoot exclusively RAW. I have for the last 4 years now, which means every single one of my photos needs some amount of post-processing to convert to a format I can display on the web.
I have CS4. I have a newer camera. CS4 does not support the raw files for the newer camera, despite the fact that Adobe's updated RAW support. I'd have to drop about a grand on CS5 (note: CS6 wasn't out yet, when I upgraded my camera) if I want native support. Really, all I need is Photoshop & Bridge, but I can't purchase those 2 separately. I shouldn't have to upgrade a program that works perfectly just because Adobe refused to allow CS4 to get the Camera RAW update.
So what do I do? I use the converter, convert my .NEF file to a .DNG for processing, and use that. At the least, I still have the original .NEF file. It's not a perfect solution, but until UFRAW updates to be a little more user-friendly, it's what'll have to do.
Now, I wouldn't expect much from a $4.99 iPad app. One-time $99 charge? Okay, I can deal with that, but it'd better be able to give me the moon & stars. $99 a year? Forget it.