Stk Flw

Overview

Stk Flw is a supplement tracking app for people who take this seriously. Smart scheduling, interaction-aware, science-backed — built for the over-40 stack. The product is in private beta with a live waitlist at stkflw.corycopeland.dev.

The problem

Most supplement tracking tools are either glorified pill alarms or spreadsheets with extra steps. Neither handles the actual complexity: timing windows that conflict, absorption interactions that require spacing, protocols that change week to week as a stack evolves. The people who care about this — who are managing five to ten supplements with real intent — have no calm, intelligent tool for it.

The over-40 market compounds this. The stakes are higher, the stacks are more deliberate, and the tolerance for noise (notifications, gamification, streaks) is lower. These are not people who want a fitness app. They want a quiet, trustworthy tool that gets out of the way.

Audience

• Serious supplement users — people running a deliberate stack, not casual single-supplement users. They know what creatine timing means. They've researched interaction windows. They are not the target for motivational nudges.
• Over-40, health-oriented — primary market. The stakes are higher and the patience for bad UX is lower. They want science-backed guidance, not wellness-app aesthetics.

What I built

• A waitlist landing page with positioning copy, feature overview, and a science section. Conversion-focused without being pushy — one email field, one clear CTA, no spam.
• An app prototype / UI concept — the "My Shelf" view (visible in the hero mockup) shows a supplement grid with taken/upcoming/low-supply states, a next-dose callout strip, and a bottom nav (Shelf, Today, Insights, You). It establishes the visual language before the full app is built.
• A brand identity — logotype in the Stk/Flw split treatment, a green-and-white palette that reads clinical-but-calm, and typography that avoids both the wellness-pastel and the fitness-aggro ends of the spectrum.

Product decisions

• No streak mechanics. Streaks punish illness, travel, and protocol changes. The app tracks what you took and when — it does not judge you for what you missed.
• Interaction-awareness as a first-class feature. Scheduling that surfaces conflicts (e.g. calcium blocking magnesium absorption) is the core differentiator. Most tools ignore this entirely.
• Science section in the landing page, not just in the app. Showing the reasoning for the approach before asking for an email address earns trust with the audience that most needs convincing.
• Private beta over public launch. The waitlist collects intent signal and keeps the early cohort small enough to gather real feedback before scaling the feature set.

Technical approach

The landing page is a static site on a Cloudflare Tunnel subdomain (stkflw.corycopeland.dev), consistent with the rest of the corycopeland.dev self-hosted infrastructure. The app itself is in active design and early prototyping — the shelf UI visible in the hero represents the intended product direction.

Current status

• Live waitlist at stkflw.corycopeland.dev
• Private beta · 2026 — invite-only early access
• App UI in prototype phase; smart scheduling and interaction engine in design
• Science and interaction database research ongoing

What comes next

• Build the core Shelf + Today views as a functional app
• Wire the interaction engine: flag conflicting supplements, suggest optimal spacing, surface the science behind each recommendation
• Instrument the waitlist to identify highest-intent users for the first beta cohort
• Add Insights view once there is enough tracking data to surface patterns