Disk Clean Pro requires OS X 10.7 or higher version and around 50 MB of free space to install.

No, Disk Clean Pro does not support PPC architecture. It only supports Intel based architecture.

No, all features are unlocked in this product. Once you purchase Disk Clean Pro, all features are accessible. You do not have to pay extra to unlock any functionality.

Disk Clean Pro has been programmed in the Sandbox environment, that is, an environment where your write-protected files are not harmed. It will only clear those files that are not write-protected, keeping your Mac safe and secure. Hence, you have to delete the rest of the items manually.

There are some files/applications on your Mac that are write-protected. Disk Clean Pro deletes only those files that are not write-protected, keeping your Mac secure. To avoid the detection of these files repeatedly, you have to delete them manually after which Disk Clean Pro will not show these items again. This happens because Disk Clean Pro has been programmed in the Sandbox environment, that is, an environment where your write-protected files are not harmed.

Some files on your Mac are write-protected. If these items do not show in the scanned items list, they are probably write-protected. In order to clear these files, you have to do it manually. This happens because Disk Clean Pro has been programmed in the Sandbox environment, that is, an environment where your write-protected files are not harmed.