OK Converter

As stated in description, this app uploads files to cloud server for conversion, so it does not have offline converting capabilities.

Also, it is not capable of doing batch conversions. For most conversions you could probably find a free online tool that is capable. For a paid app, I would like to see updatable installed software with offline capabilities and batch conversion. I am primarily converting epubs to mobi for use with ereaders.

Butter629 about The File Converter