True cost comparison — not just what the pricing page says
Quick Verdict
Supabase saves you 100%
Best for Notion
All-in-one workspace for notes, docs, databases, and wikis. Affordable for small teams, but AI credi
Best for Supabase
Open-source Firebase alternative with Postgres database. Free tier is generous, then $25-$599/mo — b
All-in-one workspace for notes, docs, databases, and wikis. Affordable for small...
Advertised
$10
/month
True Cost
$60
/month (typical)
Notion AI Credits (Custom Agents)
AI features are NOT included in any plan. $10 per 1,000 credits, consumed per AI action. Teams using...
Custom Automation Feature Gate
Plus ($10/member/mo) only includes button-only automations. Custom database automations (triggered, ...
API Access Paywall
API and webhooks require Plus at minimum ($10/member/mo). Free plan has no API access for integratio...
$10/mo annual
$20/mo annual
Open-source Firebase alternative with Postgres database. Free tier is generous, ...
Advertised
$0
/month
True Cost
$40
/month (typical)
Database Size Overage
Pro plan includes 8GB database. Additional storage costs $0.125/GB/mo. A growing app at 50GB = $5.25...
Bandwidth Overage
Pro includes 250GB bandwidth/mo. Additional bandwidth: $0.09/GB. High-traffic APIs or real-time subs...
Edge Function Invocation Limits
Pro includes 2M edge function invocations/mo. Additional invocations at $2 per million. Serverless-h...
Notion advertises $10/mo. Supabase advertises $0/mo.
Notion has 3 documented hidden fees. Supabase has 3.
Notion confidence: 78%. Supabase confidence: 77%.
| Metric | Notion | Supabase | Winner |
|---|---|---|---|
| Advertised Price | $10/mo | $0/mo | Supabase |
| True Monthly Cost | $60/mo | $40/mo | Supabase |
| Hidden Fee Total | +$50/mo | +$40/mo | Supabase |
| # Hidden Fees | 3 | 3 | Notion |
| Confidence Score | 78% | 77% | Notion |
| Pricing Tiers | 4 | 3 | — |
| Affiliate Program | No public program | None | — |
Notion advertises $10/mo and Supabase advertises $0/mo. However, when you include hidden fees, Notion has 3 documented hidden fees adding +$50/mo, while Supabase has 3 hidden fees adding +$40/mo. Based on true cost, Supabase is typically 100% cheaper.
Notion has 3 documented hidden fees: Notion AI Credits (Custom Agents), Custom Automation Feature Gate, API Access Paywall. These add approximately +$50/mo on top of the $10/mo advertised price.
Supabase has 3 documented hidden fees: Database Size Overage, Bandwidth Overage, Edge Function Invocation Limits. These add approximately +$40/mo on top of the $0/mo advertised price.
Choose Notion if: All-in-one workspace for notes, docs, databases, and wikis. Affordable for small teams, but AI credi. Choose Supabase if: Open-source Firebase alternative with Postgres database. Free tier is generous, then $25-$599/mo — b. The right choice depends on your team size, usage volume, and which features you need most.
This comparison is based on manual research of official pricing pages, terms of service, and user reports. Notion data has a 78% confidence score and Supabase has 77%. Prices were last verified in April 2026. For the most accurate estimate, enter your specific usage in our calculator.
Enter your usage to see personalized pricing for both tools
Use Free Calculator