Porta is an Android app developed by Triarc Laboratories that provides an extensive collection of sign language gestures. The app's primary objective is to offer a reliable platform to learn sign language quickly. The app contains an exhaustive list of sign language gestures with detailed descriptions, images, and videos. The app also includes a memory game to test the user's knowledge of sign language.

The app is free to use, and there are no additional requirements for registration. However, users can register within the app by providing their email and password to unlock additional features. These features include creating custom catalogs of sign language gestures, creating personalized sign language gestures with photos or videos, and generating worksheets in Word format by selecting gestures from the catalog.

Overall, Porta is an excellent app for anyone looking to learn sign language or improve their existing skills. The app's comprehensive collection of sign language gestures and additional features make it a valuable tool for educators and parents alike.