Learn Coding/Programming: Mimo (1 crore downloads -- Mimo: Learn to Code) Mimo is a coding app that teaches you Python, JavaScript, HTML, SQL and CSS through tiny lessons and interactive exercises.

Guller's app "Climate Challenge" offers interactive environmental quizzes and trivia, surprising facts, and tips to conserve energy, reduce waste, and support local sustainability efforts.

CoderZ, an online learning environment where students learn robotics and STEM by coding virtual robots, has been named a 2020 Tech Edvocate Award winner in the Best Coding App or Tool category.