Genuinely nuanced: the database engine underneath (Postgres) is free, open-source, and referenced constantly in this register's own stack recommendations. What you're paying for is managed hosting, auth, and realtime layered on top — convenience, not the core technology.
VIBE SCORE 88/100
A moderate score here just means the individual parts are buildable — it isn't a build/buy recommendation on its own. Read "why CanICodeThis says Just pay" below for the actual reason this one's still JUST PAY.
The parts this build actually needs, each rated on its own — the average is the Vibe Score above.
| Landing page | 99 |
| CRUD database | 95 |
| User login | 92 |
| Realtime collaboration | 67 |
Two real costs, not just "free": the AI agent's own usage, and hosting once it's running. Both are estimated from this app's own effort rating and component list — see the assumptions on the method page.
| AI agent — with a subscription (Claude Pro/Max, Cursor, etc.) | $0 marginal |
| AI agent — pay-per-use API, no subscription | $86–$172 one-time |
| Hosting, once it's running | $5–$10/mo |
| Domain name, if you want your own | ~$12/yr |
Supabase costs $25/mo. Even paying per-token with no subscription, and accounting for hosting, this build pays for itself in about 12 months.
Don't feel like building it? These are already made, open-source, and free.
Just pay. Genuinely nuanced: the database engine underneath (Postgres) is free, open-source, and referenced constantly in this register's own stack recommendations. What you're paying for is managed hosting, auth, and realtime layered on top — convenience, not the core technology.
Supabase costs $25/mo (about $300/yr) as of 2026-08. That's what a working rebuild would save you.
Managed hosting with automatic backups, connection pooling, and scaling means someone else handles the operational job — genuinely worth something if you don't want that job yourself Their realtime subscriptions (live-updating queries pushed to clients) are real infrastructure work beyond a plain database This is the same honest self-referential answer as this register's Vercel entry: the open-source core is free, the managed convenience is what you're actually paying for
Yes — PostgreSQL are open-source options worth trying before you build your own. Details are in the standard parts section on this page.
Closest matches on the register — ranked by the build parts they share with Supabase, not just by category.
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