Most vibe apps need auth, a database, and storage on day one. We rank backends using official pricing (2026-10-15).
Postgres backend with Auth, Storage, Realtime, and Edge Functions.
Free $0 (limits; pause after inactivity); Pro from $25/mo; Team from $599/mo; Enterprise custom.
Best for Default vibe-coder backend (DB + auth + storage) with a generous free tier.
Visit Supabase →4 tools. Entries marked “pricing unverified” lack a confirmed official price.
Auth and user management with prebuilt UIs; bills on Monthly Retained Users (MRU).
Hobby Free (50k MRU/app); Pro $25/mo ($20/mo annual); Business $300/mo ($250/mo annual); Enterprise custom.
Best for Drop-in auth UI for Next.js/React vibe apps.
Official site →Google app platform: Auth, Firestore, Hosting, Functions, Storage, and AI Logic.
Spark no-cost plan (quotas); Blaze pay-as-you-go (Spark free quotas included; eligible $300 credit).
Best for Google-ecosystem apps needing Auth + Firestore + Hosting.
Official site →Serverless Postgres (Lakebase) with branching, scale-to-zero, Auth, Functions, Object Storage.
Free $0; Launch/Scale pay-as-you-go (compute about $0.106–$0.222/CU-hour; storage $0.35/GB-mo); no monthly minimum on paid.
Best for Branching databases and agent-friendly serverless Postgres.
Official site →Postgres backend with Auth, Storage, Realtime, and Edge Functions.
Free $0 (limits; pause after inactivity); Pro from $25/mo; Team from $599/mo; Enterprise custom.
Best for Default vibe-coder backend (DB + auth + storage) with a generous free tier.
Official site →Straight answers from our verified research (2026-10-15).
Supabase is Postgres-first (Free $0 with limits; Pro from $25/mo). Firebase is Google’s Spark/Blaze platform (Spark no-cost quotas; Blaze pay-as-you-go). Pick Supabase for SQL + Auth + Edge Functions in one Postgres-shaped stack; Firebase when you want Google’s app platform.
Neon is serverless Postgres with branching and scale-to-zero. Free $0; Launch/Scale are pay-as-you-go (compute about $0.106–$0.222/CU-hour; storage $0.35/GB-mo per Neon pricing).
Not always. Clerk is strong when you want dedicated auth UIs and MRU-based billing (Hobby Free 50k MRU/app; Pro $25/mo). Use it when auth UX is the bottleneck.