Rename is a free Android application developed by Ttea Studio, which allows users to copy and rename multiple files at once. This efficient tool provides users with the ability to preview new file names before performing a copy or rename operation, and supports copy/rename operations on both internal and external storage (SD card).

Users can select files manually or choose to auto-select all files in a directory (folder). The app also offers a variety of rename options to choose from, including adding a number, changing case, finding and replacing text, updating at position, and adding the file modification date. Additionally, users can replace file names with random names or the name of the directory and add a number.

In summary, Rename is a useful tool for those who need to copy and rename multiple files at once. Its various rename options and ability to preview new file names make the process faster and more efficient.