Tab Builder is a comprehensive application designed for musicians to create custom guitar and bass tablature. It supports instruments with string configurations ranging from 3 to 7 strings, allowing users to write, copy, and paste their tablature seamlessly. The app also enables the addition of text and lyrics, enhancing the overall utility for songwriters and performers. Furthermore, users can share their creations via AirDrop, facilitating collaboration and distribution.

In addition to its core features, Tab Builder offers various functionalities such as exporting tabs in PDF or text formats. The interface includes a string-based or chord-based cursor for easy navigation, and multitouch enabled arpeggio buttons simplify the process of creating arpeggios or selecting specific strings for tab entries. Programmable chord buttons further enhance the user experience by allowing rapid chord entry, making this app a valuable tool for musicians of all skill levels.