There's something extremely smug about people who post #nofilter photos online. The implication being that they, their dinner and their view don't need any editing, filters or extra oomph.
For the rest of us mere mortals, there are plenty of great photo editing apps out there. BlackCam is one of my favorites. Make everything a touch more classy and a pinch more artsy with BlackCam. Not only can you choose from a selection of lovely black and white filters but you can live preview your choices and export photos in high resolution. The option to add old-timey film grain is a nice touch too. Grab the pro version of the app, dropped from ¥158 to FREE.