A free program for Android, by Palupisoft.
This application has a large collection of various images of Arabic calligraphy, which includes the letters, the letters in various forms, and the letters with different characteristics. It also includes a number of examples of writing, in addition to a large number of beautiful calligraphy in the form of images, which can be downloaded to the SD card, and then you can view them without any Internet connection.
The application also includes a number of beautiful pictures that are called “Arabic calligraphy”, which include beautiful and unique letters that you can use as an illustration and create your own beautiful calligraphy in the form of an image.