Health, home and travel decision
jurney
A single technical user can build and operate a useful web replacement (onboarding, logging, analytics, calendar) using existing open-source fitness projects as starting points; the original's App Store distribution, native UX, and any proprietary models would be lost.
View on the App Store↗$4.99/mo
$60/yr
Read off the official pricing page.
$100one-off100 h to build
$20/mo6 h/mo upkeep
On cash alone, building overtakes the subscription at 6 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 jurney alternatives, with the arithmetic →
What a replacement has to do
- Ask user onboarding questions to create a plan → log daily weight → compute personalized analytics and trends → display progress on a calendar and past logs.
What it still won’t have
- App Store distribution and existing install base
- Polished native iOS UX and OS-level features (push, HealthKit integrations)
- Built-in in‑app billing and App Store subscription management
- Any proprietary analytics/modeling used by the original app
What remains hard
- Product polish and ongoing maintenance
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 6 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 lightweight web replacement for a weight-loss coach app using React (TypeScript) frontend, Node.js (Express) backend, and Postgres. Core features in scope: 1) onboarding questionnaire to capture goals/starting weight/target; 2) user auth (email + password) and profile storage; 3) daily weight logging API and DB schema; 4) analytics service that computes moving averages, weekly/monthly trends, simple forecast, and BMI; 5) progress calendar UI showing daily entries and trend overlays; 6) CSV export of logs. Out of scope: native iOS app, App Store in‑app purchases, image uploads, HealthKit integration, paid subscription billing. Include input validation, server-side error handling, REST API tests (unit and integration), and deployment scripts (Dockerfiles, a small Terraform or docker-compose example) with instructions for hosting on a single small cloud VM. Provide CI tests and basic monitoring (error logs).
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 3 cited sources+3
- Price verified on pricing page+3
- Evidence score63
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 productJurney: AI Weight Loss Coach - App Store
- official pricingJurney pricing lines (in-app purchases)
- open sourceapoorvdarshan/fud-ai
Integrity checks
What held up, and what did not.
