The WCJB TV20 Weather App is a free Android application developed by Gray Television Inc. The app belongs to the Lifestyle category and is specifically designed for weather updates. It offers a range of features that are useful for mobile users.

The app provides access to station content, including 250 meter radar, which is the highest resolution available, and high-resolution satellite cloud imagery. It also features future radar to see where severe weather is headed. The current weather is updated multiple times per hour, and users can add and save their favorite locations. Additionally, daily and hourly forecasts are updated hourly from the computer models. The app also features a fully integrated GPS for current location awareness and opt-in push alerts to keep users safe in severe weather. Users can also receive severe weather alerts from the National Weather Service, making this app a comprehensive source for weather updates.