Notes has a good document scanner on iOS - https://support.apple.com/en-us/HT210336 https://support.apple.com/en-us/HT210336 Google Photoscan mentioned by some

Notes has a good document scanner on iOS - https://support.apple.com/en-us/HT210336 https://support.apple.com/en-us/HT210336 Google Photoscan mentioned by someone else is also great, it's available on iOS and Android It takes a series of photos, and guides you to move the phone as the document is illuminated from different angles by the led flash. It then blends them for optimal result to eliminate glare