This app uses a wonderful algorithm of stacking photos to create noise-free clarity and then enlarges the result to allow either a 32 MP picture or a very clean 2X or 4X zoom. Although when viewed at the pixel level you can see some minor artifacts and a bit of a plasticy look, the result is still terrific. You will find it helpful to retouch your results with some clarity and/or structure tweaks as the output is somewhat soft. And of course, always shoot using the native camera app with no zoom as back up.
That being said, the apps other features are worthless. Its HDR algorithm is horsey and smokey and looks horrendous. Its low light feature is soft and allows no exposure compensation. The video HDR bounces around too much with its light levels to be usable.
Still, this app rates five stars because what it does do well, it does tremendously well and no other app is doing it. As such I recommend it highly.
Paul in NJ about Hydra › Amazing Photography, v1.2.2