GVA Salt.usu is a language translation app designed for Castilian-Valencian and Valencian-Castilian translations. The app is developed by Generalitat Valenciana and is available for free on the Android platform.

The app is based on Apertium linguistic technology and follows the criteria of the Administration of the Generalitat Valenciana. It offers accurate and reliable translations between Castilian and Valencian languages. The user interface is simple, easy to navigate, and user-friendly. The app also provides detailed information about the grammar and vocabulary of the languages.

In summary, GVA Salt.usu is an excellent tool for anyone looking to translate between Castilian and Valencian languages. It is user-friendly, accurate, and reliable. The app is free to download and offers a great way to learn about the grammar and vocabulary of these languages.