Head-to-Head Specification Audit
Supabase vs WhistleB
Open Source Firebase Alternative · Global
Specification Matrix
| Metric | Supabase | WhistleB |
|---|---|---|
| Starting Price | $25/moBetter | $420/mo |
| API Rate Limit | 500 req/minBetter | 60 req/min |
| Target Country | Global | European Union |
| Category | Database & Backend | Whistleblower Compliance |
| Compliance | SOC2, GDPR, HIPAA-Enterprise | EU Whistleblower Directive 2019/1937, GDPR, ISO 27001 |
| Hosting Regions | EU-West, US-East, AP-Southeast | EU-West, EU-North |
| Native Integrations | 6 listedBetter | 3 listed |
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
WhistleB — Key Specs
- ✓Fully anonymous two-way communication channel
- ✓Pre-built EU Whistleblower Directive compliance templates
- ✓Available in 50+ languages including all 24 EU official languages
- ✓ISO 27001 certified, data stored in EU data centres only
- ✓Case management dashboard with audit trail
Frequently Asked Questions
What is cheaper, Supabase or WhistleB?+
Supabase starts at $25/mo, which is lower than WhistleB at $420/mo.
Which tool is better for compliance — Supabase or WhistleB?+
Both support GDPR. Supabase additionally supports SOC2, HIPAA-Enterprise. WhistleB additionally supports EU Whistleblower Directive 2019/1937, ISO 27001.
Which has a higher API rate limit — Supabase or WhistleB?+
Supabase has a higher API rate limit at 500 requests per minute. Supabase: 500 req/min. WhistleB: 60 req/min.
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. WhistleB has hosting regions: EU-West, EU-North. For data residency in Global, check each vendor's data processing agreements.
Data last verified: 8 July 2026
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