A free program for Android, by Modevlop.

Forget using complex software for your photo-editing needs because Blur Photo Editor – Blur Background Photo Effects is here to make editing hassle-free for everyone. As the name implies, the app lets you blur any part of your photo — whether that’s the foreground or the background— manually or automatically. It also has an unblur option in case of blurring mistakes. 

To get started, select an image from your gallery or take a photo using your device’s camera, adjust the blur transparency level, and save your work in your SD card. You can also show off your masterpiece on social media. No need to worry about storage as Blur Photo Editor – Blur Background Photo Effects only has a file size of 6.04 mb.