Snapseed is described as 'photo enhancement and sharing app with a powerful suite of imaging filters and tools for anyone, anywhere to transform any image into an extraordinary photo' and is a popular app in the Photos & Graphics category. There are more than 25 alternatives to Snapseed for a variety of platforms, including iPhone, iPad, Android, Windows and Mac. The best alternative is Affinity Photo. It's not free, so if you're looking for a free alternative, you could try Photopea or darktable. Other great apps like Snapseed are Adobe Lightroom (Paid), Filmulator (Free, Open Source), AlienSkin Exposure X3 (Paid) and Darkr (Free).