Offline Android Screen Keyword Detector -- 2

I want an app that detects a specific word (including special characters) added by me visible on my Smartphone , this keyword or special charcter may be in an image, running video or any possible format... (Budget: ₹1500 - ₹4000 INR, Jobs: Android, Android App Development, App Development, iPhone, Java, Mobile App Development, Mobile Development, OCR)