PostHog vs Supabase
PostHog and Supabase are both developer tools tools. PostHog is aimed at developers and small businesses, while Supabase is aimed at developers. Both have a free plan.
Open-source product analytics, replays and flags
Open-source Firebase alternative on Postgres
| Pricing | Freemium | Open source · $25 |
| Starting price | Not published | $25/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Developers, Small businesses | Developers |
| Platforms | web | web |
| Country | US · 2020 | SG · 2020 |
| Rating | — | — |
Choose PostHog if
Engineering-led startups and scale-ups that want analytics, replay, flags and experiments without three vendors.
- Several products in one with shared data
- Generous free allowances; usage-based beyond
- Open source and engineer-friendly
Look elsewhere if: Marketing-only web analytics (Plausible) or large enterprises standardized on Amplitude.
Choose Supabase if
Developers and startups who want a Postgres-based backend with batteries included and an exit path.
- Real Postgres, no proprietary data model
- Generous free tier; Pro is affordable
- Open source and self-hostable
Look elsewhere if: Teams needing multi-region writes or non-relational models by default.
PostHog vs Supabase pricing
PostHog
- Free$01M events, 5K recordings, 1M flag requests, 1,500 survey responses/mo
- Pay-as-you-gofrom $0.00005/per eventPer product after free tier, as low as $0.000009/event; billing limits
- Boost$250/moPlatform package: unlimited projects, SSO enforcement, HIPAA BAA
- Scale$750/moPriority support, SAML; includes Boost
- EnterpriseCustomRBAC, dedicated support, training
Supabase
- Free$02 active projects, 500 MB DB, 50k MAU
- Pro$25/mo100k MAU, 8 GB disk, $10 compute credit
- Team$599/moSSO, SOC 2, longer backups and logs
- EnterpriseCustomCustom SLAs, BYO cloud
PostHog · Key features
- Product analytics: funnels, retention, paths, trends, lifecycle
- Session replay with console and network logs
- Feature flags and multivariate experiments
- Surveys and in-app feedback
- Data warehouse, HogQL SQL and CDP destinations
- Error tracking and LLM observability
Cons
- UI can feel dense; analytics UX trails Amplitude
- Costs need monitoring across many products
- Self-hosting only recommended for small scale
Supabase · Key features
- Managed Postgres with extensions, pgvector and branching
- Auto-generated REST (PostgREST) and GraphQL APIs
- Auth with email, OAuth, magic links, MFA and row-level security
- Storage with CDN and image transformations
- Edge Functions (Deno) and Realtime channels
- Dashboard SQL editor, table editor, logs and self-hosting option
Cons
- Free projects pause after inactivity
- Compute add-ons and egress raise costs at scale
- Edge Functions are Deno-only
PostHog vs Supabase: FAQ
Do PostHog and Supabase have a free plan?
Yes, both PostHog and Supabase have a free plan; paid plans add more usage and features.
Which is better for small businesses, PostHog or Supabase?
PostHog lists small businesses as a core audience, while Supabase is aimed more at developers.