Turning Generic Fitness Plans Into a Personalized, AI-Driven Journey — Training, Nutrition, and Coaching in One App.
Growth helps users go from a goal — weight loss, muscle gain, or general fitness — to a structured, personalized plan, without generic one-size-fits-all programs. The app pairs smart onboarding and AI-powered body analysis with custom workouts, meal tracking, and access to certified trainers, while a dedicated trainer app and admin panel keep the business side running. Delivered by Next Level Software for iOS and Android.
Fitness plans were generic — and impossible to stick to.
Users typically started their fitness journey with good intentions and a one-size-fits-all plan: no personalization for their goals or body type, manual calorie counting, and no easy way to track how their body was actually changing without expensive in-person trainers.
Most existing apps picked a lane — workouts or nutrition, rarely both — with little AI-driven insight, weak integration with health platforms, and low motivation for people to keep going past the first few weeks. Trainers, meanwhile, had no single tool to manage clients remotely without juggling several disconnected platforms.
The brief was to bring training, nutrition, AI-assisted tracking, and professional coaching into one app — personalized from the first screen, sustainable well past week one.
Personalization from the first screen.
We built the app around a single idea: every plan should adjust to the person, not the other way around. That shaped both the onboarding flow and the technical decisions underneath it.
One Flutter app, every device.
A single cross-platform build for iOS and Android, so training plans, GIFs, and progress data stay in sync everywhere.
Health data, handled carefully.
Encrypted storage and compliance-minded handling for body metrics, health data, and payments from day one.
AI where it earns its keep.
Camera-based body measurement analysis via on-device ML, kept accurate without runaway inference cost.
Offline-first workouts.
Workout logging, meal tracking, and core plans work offline, syncing to the cloud the moment a connection returns.
Weekly demos moved from onboarding and calorie math one week to AI body analysis and trainer subscriptions the next.
One app. A personalized fitness transformation.
3 separate products. One shared backend. One team. One timeline.
Member App
- Goal-based smart onboarding with auto-calculated calorie & macro targets
- Custom training schedules with exercise GIFs, reps & weight tracking
- Food eating calculator, meal planning & trainer diet plans
- AI-powered body measurement analysis via camera
- Apple Health Kit & Google Fit integration
- Trainer subscriptions & visual performance analytics
- Notifications & reminders for workouts and meals
Trainer Tools
- Client management & progress tracking
- Custom training plan builder
- Meal plan design tools
- Online course creation & delivery
Admin Panel
- Trainer approvals & account control
- Revenue tracking across subscriptions
- Content management
- Platform-wide oversight & reporting
What this means in practice.
Users personalize their entire journey — goals, calories, and macros calculated automatically at onboarding.
AI-powered camera body analysis replaced manual tape-measure tracking for progress checks.
Apple Health Kit and Google Fit sync keep workout data flowing without duplicate manual entry.
Certified trainers run their entire client roster — plans, meals, courses — from one app.
The admin panel gives the business full visibility into trainer approvals and subscription revenue.
One cross-platform codebase means every new feature reaches iOS and Android together.
The Stack
Every tool below shipped to production — no résumé-ware.
Building a fitness or coaching platform?
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