.AP4 File

The ap4 file extension is associated with the Talking Pen, an e-learning device that allows kids to learn how to pronounce English properly.

The ap4 file stores audio data for Talking Pen. They can be imported to device from computer via USB.

This ap4 file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

How to open:

Use Kids&Us Talking Pen to playback *.ap4 files.

How to convert:

Conversion to other formats seems to be impossible.