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Head-to-Head Specification Audit
Supabase vs Kit
Open Source Firebase Alternative · Global
Specification Matrix
| Metric | Supabase | Kit |
|---|---|---|
| Starting Price | $25/mo | CustomBetter |
| API Rate Limit | 500 req/min | N/A |
| Target Country | Global | Global |
| Category | Database & Backend | Email Marketing & CRM |
| Compliance | SOC2, GDPR, HIPAA-Enterprise | GDPR, CCPA |
| Hosting Regions | EU-West, US-East, AP-Southeast | US-East, EU-West |
| Native Integrations | 6 listed | 7 listedBetter |
Supabase — Key Specs
- ✓PostgreSQL with RLS, Edge Functions, Realtime, Auth, Storage
- ✓pgvector extension: vector similarity search without Pinecone
- ✓SOC 2 Type II, GDPR DPA (EU data residency available)
- ✓Free tier: 500MB database + 2GB storage forever
Kit — Key Specs
- ✓Free plan supports 10,000 subscribers — most generous free tier in email marketing
- ✓30% recurring affiliate commission — 24-month cookie window, no cap on earnings
- ✓Visual automation builder designed specifically for creator-led email sequences
- ✓Commerce module lets creators sell digital products directly from email broadcasts
Frequently Asked Questions
What is cheaper, Supabase or Kit?+
Kit starts at $0/mo, which is lower than Supabase at $25/mo.
Which tool is better for compliance — Supabase or Kit?+
Both support GDPR. Supabase additionally supports SOC2, HIPAA-Enterprise. Kit additionally supports CCPA.
Which tool is better suited for Global?+
Supabase is evaluated for Open Source Firebase Alternative in Global with hosting regions: EU-West, US-East, AP-Southeast. Kit has hosting regions: US-East, EU-West. For data residency in Global, check each vendor's data processing agreements.
Data last verified: 26 June 2026
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