Temporary files - possible?

I have an application that modifies permanent files that it relies on and also creates and reads from temporary files while it runs. When I package and run it, I immediately get the read-only file system error. Is this a consequence of using AppImage or is there some way to handle these types of files? Examples: 1) Internal log/data files and 2) Calling other binaries and parsing their output files.

AppImages are read-only. Please make sure that your application only writes within $HOME.