What's a solid Android app for coordinating group fitness challenges and sharing progress with my clients?

Okay, so Telegram has seriously streamlined how I run my fitness challenges. The group chat feature is a total game-changer. I can post daily workouts, motivation, and everyone can share their progress. The file-sharing capability is clutch for sending personalized workout plans and nutrition guides. Clients can easily upload progress pics and videos, which keeps everyone accountable and pumped up. I'm all about efficiency, and Telegram nails it. Plus, the message encryption gives me peace of mind when sharing sensitive info. I've been using it to create custom challenges and even have a separate group for my VIP clients. It's way better than endless email chains or juggling multiple apps. For a free app, it packs a serious punch in terms of functionality and user-friendliness. It's definitely helped me level up my coaching game and keep my clients engaged and motivated!