FitPlan Subscription Platform
A subscription-based fitness platform with 500+ training videos, personalized workout plans, and progress tracking. Built with HLS video streaming and a drag-and-drop workout builder, the platform grew subscribers by 120% and reduced churn by 35% within the first year.
Interactive Preview
Exercises
Bench Press
ChestPull-ups
BackOHP
ShouldersBicep Curls
ArmsTricep Dips
ArmsWorkout Timeline
Bench Press
4 sets × 8 reps · 90s rest
Pull-ups
3 sets × 10 reps · 60s rest
OHP
3 sets × 12 reps · 60s rest
Bicep Curls
3 sets × 12 reps · 45s rest
Workout Builder
Drag-and-drop program builder with exercise library
The Challenge
A fitness startup needed a subscription platform with workout plan builders, progress tracking, and video streaming for their growing library of 500+ training videos.
Revenue was entirely from one-time PDF sales averaging $29 each — no recurring revenue despite a highly engaged audience of 8,000+ followers
500+ training videos on Vimeo with no categorization, no progress tracking, and no way to structure them into coherent programs
High customer support volume from users asking "which workout should I do next?" — no personalization or progression logic
Mobile experience was poor — users had to navigate between Vimeo, a PDF viewer, and a separate website to complete a single workout
The Solution
We delivered a full-stack Next.js platform with Stripe subscription billing, HLS video streaming, a drag-and-drop workout builder, and mobile-responsive player.
Stripe subscription billing with flexible plans (monthly, annual, and team pricing) and automated dunning to reduce involuntary churn
HLS adaptive bitrate streaming via CloudFront delivers smooth video playback on any connection speed, from gym WiFi to cellular
Drag-and-drop workout builder lets trainers create multi-week programs by combining individual exercises into structured plans
Gamification engine with workout streaks, achievement badges, community challenges, and weekly leaderboards to drive retention
Project Timeline
- 1
Content Strategy & Planning
Cataloged all 500+ videos, designed the taxonomy (muscle groups, difficulty, equipment, duration), and mapped the content into 24 structured programs.
- 2
Platform Core
Built the Next.js application with user authentication, Stripe subscription billing, video player with HLS streaming, and the workout plan engine.
- 3
Creator Tools & Content Migration
Developed the drag-and-drop workout builder, migrated all videos from Vimeo to CloudFront with adaptive bitrate encoding, and built the content management dashboard.
- 4
Gamification & Community
Implemented streak tracking, achievement badges, community challenges with leaderboards, and the personalization engine based on fitness assessments.
- 5
Launch & Growth Optimization
Launched with a founding member promotion to the existing Instagram audience. A/B tested onboarding flows, payment screens, and workout recommendation algorithms.
Key Features
Adaptive Video Streaming
HLS streaming automatically adjusts quality based on connection speed — no buffering even on slow gym WiFi.
Workout Builder
Drag-and-drop interface for trainers to create multi-week programs by combining exercises with sets, reps, and rest times.
Progress Tracking
Visual progress dashboard with workout history, personal records, streak tracking, and body measurement trends.
Community Challenges
Weekly and monthly fitness challenges with leaderboards, creating friendly competition and boosting engagement.
Smart Recommendations
Personalized workout suggestions based on fitness assessment results, workout history, and stated goals.
Offline Workouts
Download workout plans and videos for offline use — perfect for travelers and users with unreliable gym WiFi.
Technical Architecture
The platform is a Next.js application deployed on Vercel with ISR for content pages. Stripe handles all subscription billing with webhooks feeding into a Node.js API for subscription lifecycle management. Training videos are transcoded into multiple HLS bitrate variants using AWS MediaConvert and served through CloudFront with signed URLs for content protection. PostgreSQL stores user data, workout plans, and progress records. Redis powers the leaderboard rankings and session caching. The workout builder uses a custom React DnD implementation with real-time preview. The fitness assessment engine uses a decision tree algorithm to map users to appropriate program levels.
Tech Stack
Results
+120%
Subscriber Growth
-35%
Churn Rate
22 min
Avg. Session Time
What Our Client Said
"I went from selling $29 PDFs to running a $50K/month subscription business. CodingAlphas didn't just build a platform — they helped me think through the entire content strategy, pricing model, and retention mechanics. The workout builder saves me 10 hours a week on content creation, and the community features keep people coming back. My churn rate is half the industry average."
Jenna Park
Founder & Head Trainer, FitPlan Fitness
Lessons Learned
Content organization matters as much as content quality. Structuring 500+ videos into progressive programs with clear difficulty levels and prerequisites transformed a chaotic library into a product worth subscribing to.
Gamification needs to be tuned carefully. Our initial streak system was too aggressive (daily requirements), causing burnout and cancellations. Switching to a 3-day-per-week target with recovery day credit improved retention by 22%.
Video encoding costs can spiral. We implemented a tiered encoding strategy — premium content gets 6 bitrate variants, while supplementary content gets 3 — reducing our CloudFront and MediaConvert costs by 40% without noticeable quality impact.
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