Impressive! I noticed that one photographer said that they used the Lightroom Mobile app and Snapseed, while another used an Instagram filter ...that made me feel a bit better, but none of the pics that I've taken on my android phone look anywhere near this good. Thanks for sharing this!
summary http://thevizual.com/best-iphone-photos-2017/
full list and also photos from past years can be seen here http://www.ippawards.com/2017-photographers-of-the-year/