How do I position my app when there are bigger competitors?

Go narrower. Bigger competitors serve everyone, which means they serve no one perfectly. Find the specific person with the specific problem your app solves best, and speak only to them. Narrow wins early. Excel was included automatically with most computer shipments yet AirTable built a sizable business by serving the market that didn’t want Excel. The size of your competitor is irrelevant if you have a strong customer acquisition plan.