Yes, Google Photos is an app. It is a photo-sharing and storage service developed by Google. It was launched in 2015 and is available on both Android and iOS devices.
With Google Photos, you can store, organize and share your photos and videos with just a few taps. It helps you free up space on your device while preserving full-resolution copies of your photos. It also automatically creates stories, collages and animations of your photos. It also offers advanced editing tools and private sharing with friends and family.
You can download the app for free from Play Store (for Android) or the App Store (for iPhone). Once you install it, you can sign in with your Google account and start exploring.