monthlymuster.vercel.app
ConceptWeb Application
14 daysMonthlyMuster
Kanban boards where dragging a card feels instant and a page refresh loses nothing.
Drag-and-drop KanbanRefresh-safe Boards
Case study & metrics
All work
Web ApplicationConcept build
BrawnBar
Workouts, meals and progress in one place. Free forever, and the data never leaves your account.
Concept build: no real user data; not a medical, nutrition or fitness service.
↳ 100% Free · Zero Ads · Full Nutrition + Fitness Tracking
- Next.js
- TypeScript
- Supabase
- Tailwind CSS
- Shipped
- 14 days · Web Application
- Stack
- Next.js · TypeScript · Supabase
- Outcome (lab)
- 100% Free · Zero Ads · Full Nutrition + Fitness Tracking
brawnbar.vercel.app
brawnbar.vercel.app
01
The challenge
Concept brief: most fitness apps charge $10+/mo, run ads, or sell health data. I built a fully-featured tracker that's free, with no paywall and no tracking.
02
The solution
Privacy-first Supabase with Row-Level Security (data isolated per user), local-first nutrition log (instant sync), custom exercise library + progressive overload engine.
03
Key outcomes (lab)
- Privacy-first: your data is only visible to you
- Offline-capable nutrition logging
- Custom progressive overload engine
Engineering outcomes (lab)
Measured on the concept build.
Data Privacy
Sold to brokers
Before
Zero tracking
After
Monthly Cost
$12/mo avg
Before
$0
After
Offline Support
None
Before
Full nutrition logging
After
Lighthouse mobile · connection range (2026-10-15)
150ms RTT: 97 · LCP 2.6s
Lighthouse preset
measured 16ms: 100 · LCP 0.9s
Measured line: the same build, not an improvement
Measured with Lighthouse 13 on mobile emulation, simulate throttling, median of 3 runs, against the live site on 2026-10-15. Published under two named profiles: Lighthouse’s mobile preset (150 ms RTT / 1.6 Mbps / 4× CPU), which anyone can reproduce, and this machine’s actual connection (16 ms / 4 Mbps / 4×), characterised by ping and a timed download rather than assumed. Connection assumption alone moves LCP by up to 3× on identical bytes, so neither figure is the whole truth alone. Lab numbers on a throttled connection, not client analytics or revenue data. No client affiliation implied.
Next build
E-Commerce