Good morning — Ready to make today count?
$327
Monthly Revenue
51
Total Members
10
Classes This Week
61%
Attendance Rate
Ezra Peterson
ezra.peterson49@example.com
Jasper Johnson
jasper.johnson48@example.com
Mia Harrison
mia.harrison47@example.com
James Campbell
james.campbell46@example.com
Boxing Fundamentals
Yuki Tanaka · 5:00 pm
ezra.peterson49@example.com
ezra.peterson49@example.com
Phone
+61 465 998 919
Member Since
20 Sept 2025
Conditioning Circuit
17 May 2026, 6:00 am
HIIT 45
9 May 2026, 7:00 pm
A production-grade, multi-tenant SaaS platform designed, architected, and built almost entirely through AI-assisted development as a solo developer.
Next Gym is the most technically ambitious project I have built: a full-stack SaaS platform spanning four deployed sub-applications and a shared Turborepo monorepo. It was developed primarily using Claude and Cursor as AI coding assistants, which dramatically accelerated the scope and quality of what I was able to ship alone.
The platform covers the complete lifecycle of running a gym business: member management, class scheduling and QR check-in, multi-product billing via Stripe, document compliance and digital signing, multi-location support, personal training management, and a React Native mobile app with biometric authentication. Each of the four sub-applications shares a tRPC v11 API layer, a Drizzle ORM schema over Supabase PostgreSQL, and a cross-platform @gym/shared package.
AI-driven development was not just a productivity tool. It was the core methodology. AI tools designed the database schema, scaffolded all 27 tRPC routers with end-to-end type safety, implemented complex multi-tenancy and RBAC patterns, wrote React Email templates, and maintained consistency across a large codebase.
Good morning — Ready to make today count?
$327
Monthly Revenue
51
Total Members
10
Classes This Week
61%
Attendance Rate
Ezra Peterson
ezra.peterson49@example.com
Jasper Johnson
jasper.johnson48@example.com
Mia Harrison
mia.harrison47@example.com
James Campbell
james.campbell46@example.com
Boxing Fundamentals
Yuki Tanaka · 5:00 pm
Scan member QR codes to check them into classes.
Scan QR Code
Can't scan? Give staff this code:
H9SVCF
Boxing Fundamentals
Alex Reid
Scan member QR codes to check them into classes.
Scan QR Code
Checked In!
Alex Reid
Alex Reid
UNLIMITED — $29
New to Bondi Strength? Try every class for 2 weeks, no commitment.
No upcoming bookings
Ready for your next session?
Can't scan? Give staff this code:
Boxing Fundamentals
Check-in for
Alex Reid
Show this QR code to staff when you arrive, or tell them your 6-character code
ezra.peterson49@example.com
ezra.peterson49@example.com
Phone
+61 465 998 919
Member Since
20 Sept 2025
Conditioning Circuit
17 May 2026, 6:00 am
HIIT 45
9 May 2026, 7:00 pm
Manage your gym's class schedule and bookings
Wed
20pm
0/14
Thu
217:00 pm
0/20
Fri
229:00 am
0/20
12:00 pm
0/20
Sat
237:00 am
0/16
Nova is the in-app AI assistant built for gym staff. It can read live dashboard data and suggest new records, but it never writes to the database on its own. Every change runs through a proposal card that the user reviews and approves first.
The diagram below walks through what happens when a staff member sends Nova a message, from the chat panel down to the gym's database, and back again.
Staff asks a question
Nova chat panel
Knows which page you're on
Server checks it
Signed in · on-topic
Nova thinks
Grok 4 + its house rules
Nova picks a path
Up to 8 tool steps per reply
Look something up
17 read tools
Suggest a change
3 write tools
Looks up the answer
runs automatically
Reads the database
scoped to the gym
Drafts a change
Proposal card
preview first
User approves
Change is saved
logged as Nova
Read answer
Approved change
Result appears in the chat
Staff-facing dashboard: member management, class scheduling, QR check-in, multi-product billing, document compliance, audit logs, and full RBAC.
Next.js 15 · tRPC · Drizzle ORM
Member-facing web app: class booking, product shop, Stripe checkout, digital document signing, notifications, and profile management.
Next.js 15 · tRPC · Stripe
Public-facing marketing site for the platform with feature showcases and onboarding flows for gym operator acquisition.
Next.js 15 · Tailwind CSS v4
Native iOS/Android app: class booking, QR check-in, product shop, biometric login, dark mode, and custom tab navigation.
Expo SDK 54 · React Native · NativeWind
This project was built almost entirely through AI-assisted development. Claude and Cursor were used as primary development partners, not just for autocomplete, but for architectural decisions, full feature implementations, database schema design, API layer scaffolding, and code review. Cowork handled file management, cross-referencing documentation, and multi-step workflow automation.
Architecture decisions, database schema design, all 27 tRPC routers, email templates, RLS policy review, CLAUDE.md conventions, and multi-step workflow automation across the monorepo
Real-time pair programming, inline edits, multi-file refactors, and rapid feature scaffolding, used for the majority of day-to-day implementation
Treating AI as a senior engineer: precise context windows, explicit constraints in CLAUDE.md/AGENTS.md, task-specific agents, and iterative verification loops