Umpa is a free mobile app developed by Hashtag CTA LLC for Android devices. It falls under the Lifestyle category and offers a unique way for friends to connect and challenge each other.

The app allows users to create personal challenges and invite their friends to participate. Challenges can be created in various categories, and users can submit questions to their friends, who can then answer them in a 1vs1 battle. The winner of the challenge receives a signal from the loser, and the app keeps track of the overall score.

Umpa offers a fun and interactive way for friends to connect and compete with each other. It is easy to use and has a simple interface. The app also has a feedback section for users to provide suggestions and comments to the developer.

Overall, Umpa is an excellent app for anyone looking for a fun way to connect with friends and engage in friendly competition.