Storage Analyzer is a free Android app developed by R J Hart Software. This utility tool helps users manage the space used on their Android phones, tablets, or Chromebooks. It presents the information in a simple manner that makes it easy to understand where space has gone.

The tool lists all the storage areas and devices available on a user's phone or tablet, including internal storage, SD cards, and attached devices such as hard drives. It shows the total and used space on each of these devices. Users can scan each storage device and view the details of the files on them. They can delete files that are no longer needed or move files around to manage their free space.

Pro users can also scan their installed apps to see which apps are taking up lots of space. They can then go directly to the app's settings to clear data or uninstall the app (where possible). Storage Analyzer has no popup or full-screen ads, making it easy to use.

Note that there may be performance issues when deleting and modifying files on some devices, but the developer is working on ways to speed things up while maintaining high reliability.

Overall, Storage Analyzer is a great tool for managing phone storage, and I would recommend it to anyone looking to free up space on their device.