Offline OCR app (iOS Development)

Offline OCR app which allows user to convert most recent screenshot image to text and copy that text to clipboard. This OCR functionality should be in ViewdidAppear so that it takes most recent screenshot everytime screen reappears. The user should be able to use this OCR feature to convert most recent screenshot into text and copy it to clipboard from SiriShortcuts (so that user can use OCR functionality in creating new custom SiriShortcuts).