RataChat is a free mobile application available for Android 9.0 developed by NEGAS. It is a lifestyle app created by software company Devadler with permission from the character's owner, Ricardo Adrián Lozoya. The app features the character Rata, who was created by Lozoya and is popular on his YouTube channel, MrDonMakila.

The app allows users to chat with friends and family in a fun and interactive way using Rata's character. The interface is user-friendly and easy to navigate. The app is available to download from the Google Play Store and can be accessed via the official server, raltoon.com. Additionally, Lozoya's Google YouTube account is the same as his Google Play Developer account, which serves as proof of his ownership.

Overall, RataChat is a unique and entertaining app that adds a touch of fun to everyday conversations. It is a great addition to the lifestyle category and is perfect for those who enjoy using creative and interactive communication methods.