Castly is a versatile casting application that enables users to stream content from their smartphones to larger screens such as TVs using devices like Roku, Chromecast, or DLNA-compatible devices. It functions by connecting both the phone and the casting device to the same Wi-Fi network, allowing smooth streaming of videos, photos, and music with high-quality playback.

Castly supports a broad array of media formats, including popular video types like MP4, AVI, and MKV, as well as audio formats such as MP3 and WAV. Nonetheless, users should verify if their specific media files are compatible, as some less common formats might not be supported directly by the app.

While Castly offers a free version with essential functionalities, certain premium features may require a subscription or one-time in-app purchases. These premium options typically include advanced streaming capabilities, an ad-free experience, and enhanced media controls for a more complete casting experience.

To set up Castly, download and install the app from the Google Play Store or Apple App Store. Make sure your smartphone and casting device are on the same Wi-Fi network. Launch Castly, select the media file you want to cast, then choose your casting device from the list. Follow any on-screen prompts to finalize the setup.

Castly allows streaming to only one device at a time; simultaneous casting to multiple devices is not supported. To stream to different devices, you need to switch between them. The app makes it easy to switch, offering flexibility in managing your casting sessions.