PinpointKit

PinpointKit is an open-source iOS library in Swift that lets your testers and users send feedback with annotated screenshots using a simple gesture.

Features:

•  Shake to trigger feedback collection
•  Add arrows, boxes, and text to screenshots to point out problems.
•  Blur our sensitive information before sending screenshots
•  Automatic, opt-in system log collection (iOS 9.x only)
•  Customize everything
•  Absolutely free and open source
•  No backend required