Back Up to internal SD Card

[AC Question]

What's a good app for back up and restore using the internal SD card?

 

[ManiacJoe]

Which phone?
Which version of android?
Which carrier?

What data are you looking to back up?

When you say "internal SD card" do you mean the built-in internal storage of the phone or the "external" micro SD card you plugged in after removing the back cover of the phone?