Rain Bird is a free Android application developed by Rain Bird Corporation that enables users to connect their Rain Bird controller to their mobile device. The app allows users to turn on sprinklers, set up customized watering schedules, and automate weather adjustments, saving water and money.

The Rain Bird app is compatible with various Rain Bird controller models, including ESP-ME3, ESP-TM2, ESP-RZXe, ST8-WIFI, RC2, ARC8, and ESP-Me WiFi. The app's intuitive interface makes it easy to use and set up, even for users who are not tech-savvy.

With Rain Bird, users can easily manage their sprinkler system from anywhere, anytime, without having to physically go to the controller. The app also provides information on watering history, making it easier for users to track their water usage and adjust their schedules accordingly. Overall, Rain Bird is a useful app that simplifies the process of watering lawns and gardens.