Snapseed App - Add saturation.. Picture looks even more dramatic.
https://play.google.com/store/apps/details?id=com.niksoftware.snapseedDenoise option in Pixlr Express
https://play.google.com/store/apps/details?id=com.pixlr.expressI set to 5 by trial and error
https://play.google.com/store/apps/details?id=com.pixlr.express