Duelo

Keep track of student competitions and sports matches with ease! This mobile application is designed for teachers, coaches, or event organizers to manage and rank players using the trusted ELO rating system — all stored locally on a single device with no need for an internet connection or online accounts. Whether it’s individual duels or small team matches, the app lets you quickly record match outcomes and scores, automatically updating player or team rankings based on performance. Support for multiple tournaments or classrooms makes it easy to organize different groups, track their matches independently, and view evolving leaderboards over time. Key Features: 📊 ELO-Based Ranking System: Accurately rate players or teams after every match using a proven, dynamic rating formula. ⚔️ Support for Duels and Team Matches: Record one-on-one or small team results effortlessly. 🏆 Multiple Tournaments/Classrooms: Manage separate competitions with independent leaderboards and histories. 📖 Complete Duel History: Review detailed records of every match played, including scores, participants, and dates. 📱 Local Data Storage Only: All information is safely stored on the device — no servers, no cloud sync, no data sharing. 🔒 Admin Panel & Control Access: Protect admin settings with a control code while allowing students to safely view rankings and match results from the same device. ⚙️ Customizable Settings: Adjust tournament names, reset rankings, and manage player lists through a clean and intuitive admin interface. This app is perfect for sports teachers, club managers, and activity leaders who want a simple, secure, and flexible way to organize competitions and keep track of standings — all without leaving the classroom, gym, or playground.