Home : File Types : EXTR File

.EXTR File Extension

File TypeCOW App Extractor File

DeveloperIXI International
1.5 (2 Votes)
CategoryEncoded Files

What is an EXTR file?

An EXTR file is an encrypted folder used by the COW operating system, which is an operating system based on Linux for select mobile devices that was discontinued before being released to the public. It contains a program and a Main.py script that stores instructions for where the COW system installer should install the program. EXTR files are downloaded to a mobile device from the COW App Store and then decrypted and opened automatically by the COW system when installing the downloaded program.

More Information

Since the COW operating system is no longer developed, you will not encounter COW App Extractor EXTR files. If you do come across a file with the .extr file extension, it is saved in a different format than the COW App Extractor format.

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Programs that open EXTR files

Not meant to be opened
Not meant to be opened
Not meant to be opened
Updated 7/7/2020

About EXTR Files

Our goal is to help you understand what a file with a *.extr suffix is and how to open it.

The COW App Extractor file type, file format description, and Mac, Windows, and Linux programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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