100,000,000 - 500,000,000 downloads
Pros
- Good-looking layout
- Simplicity
- Largest photo sharing social network
- Cool effects
- Integration with Facebook, Twitter, Tumblr
Cons
- Needs to be faster loading pictures
Picamera
Awesome Miniature Pro
Awesome Miniature - Tilt Shift
One Moment
Photoplay
Fotor - Photo EditorScreenshots Instagram
100,000,000 - 500,000,000 downloads