We designed Steller Goals, a mobile app that makes goal-setting simple, engaging, and collaborative. Users can create custom goals with personalized progress tracking, milestone setting, and limit management, tailoring their journey to fit their unique needs. To enhance engagement, the app offers intuitive navigation, visual progress indicators, and motivational tools. Collaboration is promoted through features that enable users to share goals, track collective progress, and celebrate milestones together, fostering a sense of community and shared achievement.