Health, home and travel decision
Strong Pro
A competent developer can reproduce the core workout-logging and basic analytics with open-source components (see openGym), but matching Strong’s native apps, polish, integrations and paid PRO features requires more work and resources.
Visit website↗$4.99/mo
$60/yr
Not verified against a pricing page.
$100one-off80 h to build
$25/mo6 h/mo upkeep
On cash alone, building overtakes the subscription at 7 seats.
Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need - the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship. All Strong Pro alternatives, with the arithmetic →
What a replacement has to do
- Plan a workout, start a workout session, record sets/reps/weight/RPE, save session and visualize progress
What it still won’t have
- Polished native iOS/Android apps and Apple Watch support
- Pro analytics, advanced charts and proprietary workout algorithms
- Third‑party integrations and existing curated exercise database
- Brand polish, reviews and large user community
What remains hard
- Brand trust
Trusted by over 5 million users worldwide.
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 7 seats.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a self-hosted workout tracker web app using Node.js (Express), Postgres, and React. Implement: user accounts (email/password), models for exercises/workouts/sessions, API endpoints to create/edit workouts and record sets (weight/reps/RPE/timestamp), session UI for logging sets quickly, CSV export, basic charts for progress (1RM/time). Out of scope: native iOS/Android apps, Apple Watch support, paid PRO features. Include input validation, error handling, automated tests for API endpoints, and Docker Compose for local dev and PostgreSQL.
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 3 cited sources+3
- Evidence score60
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time - so the same evidence always produces the same number.
How scoring works →Cited sources · 3
Every page the run actually retrieved.
- official productStrong - Workout Tracker & Gym Log
- open sourceEnjoyingFOSS/feeel
- open sourcesergio11/fitflextv_android
Integrity checks
What held up, and what did not.
