Open the App Store
Tap the search bar
Search for the app name
Tap the app result
Tap Get or the download icon
Authenticate with Face ID, Touch ID, or Apple ID password
Wait for the app to install
Open the app from the Home Screen
If the app has a barcode scanner, allow camera access when prompted
Point the iPhone camera at the barcode
Hold the barcode within the frame until it scans
Tap the scan result if needed
If using a QR code, open Camera and scan it directly
If the barcode is in Photos, open the image and use Live Text or a scanner app
If scanning for App Store content, use the App Store search or redeem code feature if available