Recover application is designed to recover or restore deleted files from hard disk or any other storage device. This application is developed for personal users. This can be very helpful for those users , especially when a file is accidentally deleted , or when Windows cannot read the storage device. However, the device's file itself remains intact. Requiva is basically a freemium software package , which means you can use the program and its core functions for free , but a premium ' Pro' version is available for a small fee , with a number of new features added. In this case, the free version incorporates the same recovery technology as the ' Pro' version. As a result, it is useful for most users. Pro products add additional features , such as virtual hard drive support and priority customer support.