Mobile App Development for Sports Section Club
A sports section is a club with permanent membership, training cycles, and competitive calendar. App here is not just class booking, but team management tool: attendance, membership fees, results, coach-to-athlete communication and parent involvement.
Key Difference from Fitness Studio
In a section, children train. This changes role model: besides coach and athlete, parent appears as separate role with limited access. Parent sees schedule, child's attendance, coach notifications, pays fees. But doesn't see other children's medical data and can't edit anything except own profile.
Multi-role system with RBAC: admin / coach / athlete / parent. Flutter — display logic via role flag in JWT token, but each action authorization — only on server.
Competitive Calendar and Results
Competition protocol — sport-specific structure. For combat sports: weigh-ins, bracket, results. For swimming: races, lanes, times. No universal schema — need design for specific sport.
Minimal common denominator: event → participants → results (numeric or rank-based) → standings. Store results in PostgreSQL with JSON field for sport-specific data — flexible without migrations when adding new parameter.
Membership Fees and Payments
Monthly membership fees — recurring payment via YooKassa or Stripe. Important: auto-charge requires notification 3 days before ("Friday we'll charge 2500 ₽ for February") — reduces declined transaction rate and support complaints.
Overdue fees: if child listed in section but fee unpaid 15+ days — coach sees flag in group list. Auto-blocking recording (like in fitness) in children's section — debatable, better as notification.
Tech Stack and Communication
Flutter + Riverpod. For group chats (coach → group) — Firebase Realtime Database or own WebSocket chat. Important: general section chat where children can write — requires content moderation. Or coach-only chat (broadcast), no participant response.
Media content: training and competition photos. Firebase Storage + group-based access rules. Video analysis by coach — Cloudflare Stream with private token links.
Timeline
MVP (schedule, attendance, fees, roles): 10–14 weeks. With competition module, chat, and video analysis: 16–22 weeks. Cost depends on sport type and competition module complexity.