000 — Planning the MVP
Date: 2026-09-09
Prompt
Build a simplified planning app like the old Reddit /r/steroids plotter. Notes from a conversation:
- Peaks and troughs and plotting for steroids
- Different compounds have different esters
- Half-lives
- For GLPs and steroids
Also log the prompting journey in the repo so a friend can learn how to make a similar web app.
Target: a simple Next.js SPA on Vercel, same shape as early PedsCalc — one shared form, routes that load different compounds. localStorage now, maybe a later ad-free cloud save. Stack: Next.js + Tailwind + shadcn. Keep it lean. Plan first.
What we decided
- The old tool people remember is steroidplot → steroidcalc → steroidplotter.com. We rebuild the classic model, not the commercial Tmax/Cmax/ng-dL suite.
- Copy early PedsCalc architecture (shared form + catalog +
/[slug] routes), not current PedsCalc (Clerk/Stripe/Mongo). - Y-axis is estimated remaining active milligrams after ester weight. Not fake blood units.
- v1 catalog is eight compounds: four testosterone esters, NPP vs deca, semaglutide, tirzepatide.
- Recharts is the one extra library because a plotter without a chart is a form.
- Persistence is localStorage plus a shareable
?p= query string. - Journey markdown is a first-class route, not leftover notes.
- GitHub repo starts private.
What we shipped
This planning note. Implementation is the next entry.
What we skipped
Auth, ads, orals, Sustanon, tren, vial math, compare-two-protocols mode, and any backend.