Just ran the portable version of iobit uninstaller and it writes entries to the appData roaming folder:
IOBit/PPMain.ini
IOBit/IObit Uninstaller/UninstallHistory.ini
IOBit/IObit Uninstaller/SoftwareCache.ini
IOBit/IObit Uninstaller/Main.ini
IOBit/IObit Uninstaller/DistrustPlugin.ini
IOBit/IObit Uninstaller/BCleanerdb
Is there a setting I missed? Otherwise this needs removing from the site.