Snapseed - Snapseed is a photo enhancement and sharing app with a powerful suite of imaging filters and tools...
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Paper Camera - Paper Camera is the BEST Sketch/Cartoon app in the App Store.
Camera Roll - Simple Gallery App for Android, with lovely Material Design.