In Ubuntu/Linux apps comes in different package manager, some apps distributed as compiled binary file. They can be run directly from the folder.
How to run the tar.gz binary
First get the file, download it from app site and extract using the default app. In the extracted folder locate the launcher file.
The launcher file require execution permission.Try to issue the following on the console
If this not workout ,add +x permission to the file by using chmod +x filename which will add execute permission to the file and try again
this should work out