Habitica

Habitica is a free habit building and productivity app that treats your real life like a game. With in-game rewards and punishments to motivate you and a strong social network to inspire you, Habitica can help you achieve your goals to become healthy, hard-working, and happy. Treat your life like a game to stay motivated and organized! Habitica makes it simple to have fun while accomplishing goals. Input your Habits, your Daily goals, and your To-Do list, and then create a custom avatar. Check off tasks to level up your avatar and unlock features such as armor, pets, skills, and even quests! Fight monsters with friends to keep each other accountable, and use your gold on in-game rewards, like equipment, or custom awards, like watching an episode of your favorite TV show. Flexible, social, and fun, Habitica is the perfect way to motivate yourself to accomplish anything.

For information on how to set up a locally hosted instance of Habitica, see https://habitica.fandom.com/wiki/Setting_up_Habitica_Locally