When Quddus Pativada was 14, he wished that he had an app that could summarize his textbooks for him. Just five years later, Pativada has been there and done that -- earlier this year, he launched the AI-based app Kado, which turns photos, documents or PDFs into flash cards. Now, as the 19-year-old founder takes the stage for Startup Battlefield, he's looking to take his company, DigestAI, beyond flashcards to create an AI dialogue assistant that we can all carry around on our phones. "If we make learning truly easy and accessible, it's something you could do as soon as you open your phone," Pativada told TechCrunch. "We want to put a teacher in every single person's phone for every topic in the world."