You can run the installer, specify a folder other than the "Program files" one, and it will extract all files necessary to run Temp_Cleaner GUI into it, all the configuration is stored in Config.ini in the root directory btw and Temp_Cleaner GUI doesn't use registry for anything, it's just the inno setup installer that stores values in the registry for the uninstaller to appear in control panel.
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You can run the installer, specify a folder other than the "Program files" one, and it will extract all files necessary to run Temp_Cleaner GUI into it, all the configuration is stored in Config.ini in the root directory btw and Temp_Cleaner GUI doesn't use registry for anything, it's just the inno setup installer that stores values in the registry for the uninstaller to appear in control panel.