WellnessCAN I VIBECODE
Strong Pro?
BUILD FIRST
- One defined user and a repeatable end-to-end job
- A small, clear data model with sign-in only if it is genuinely needed
- Loading, empty, error, and success states that make the workflow feel complete
LEAVE FOR LATER
- Large integration marketplaces
- Multi-region scale and enterprise administration
- Every power-user setting from the established product
RESEARCH NOTES
What this tool actually does.
Strong PRO is the paid subscription tier of Strong Workout Tracker Gym Log, a mobile app for logging gym workouts. PRO adds unlimited workout templates, body part measurements, all charts, a plate calculator, a warm-up calculator, and custom icons/themes. The base Strong app is free with unlimited workout logging but caps custom routines at 3; PRO removes that cap for $4.99/month or $29.99/year via in-app purchase. Core workflow: user selects or creates a routine from the exercise library, logs sets (weight/reps/distance/duration), tags sets as warm-up/failure/drop, groups exercises into supersets, uses an auto rest timer, and reviews progress via charts, one-rep-max estimates, and personal records. PRO data (workout history) remains accessible even if subscription lapses; free tier stays fully usable.
RESEARCHED BUILD PROMPT
Give this to your coding agent.
Replace the core functionality of Strong PRO (the premium tier of Strong Workout Tracker Gym Log) with an original web app called 'GymLog PRO'. The workflow: a user creates or selects a multi-exercise routine; for each exercise they log sets with weight, reps, and optional tags (warm-up, drop, failure); supports supersets, bodyweight/duration exercises, an auto rest timer, and a plate calculator for barbell loading. After a session, the app shows charts of volume and one-rep-max over time, personal records, and body measurements. User-facing requirements: a searchable exercise library with custom-exercise creation, a routine builder with a 3-routine cap for free users and unlimited templates for PRO, set-entry UI with quick-increment weight/reps, rest-timer countdown, charts for volume/1RM, measurement logging, CSV export. Technical requirements: React + TypeScript, a local-first database (e.g., SQLite via Prisma/Expo) with optional cloud sync, authentication for multi-device. Implementation approach: build as a responsive PWA, use IndexedDB for offline logging, Recharts for charts, and a lightweight OAuth provider for auth. Explicitly do not copy Strong's brand name, logo, color scheme, icon set, or exact UI layout; design an original interface. Out of scope: no Apple Watch app, no in-app purchase storefront (stub a settings flag for PRO), no animated exercise videos, no social features. Deliver a README covering setup steps (install, env vars, DB migration), the PRO/free gating logic, and important limitations (single-user defaults, no native push notifications, progress pictures not implemented).