The verdict
On the data we hold, Supabase comes out ahead. Here is why, point by point.
What the data says
- Both cover 1 of the 1 features we compared.
- Both have a free plan, so you can try each before you pay.
- Only Supabase has an MCP server, so an AI employee can work in it directly.
- In our Tech stack ranking, Supabase places 12 and Google Tag Manager 16 of 72.
Side by side
| 5 points compared | ||
|---|---|---|
| Starts at | Not known yet | $25/mo |
| Free plan | Yes | Yes |
| API | Yes | Yes |
| MCP server | No | Yes |
| Self-hosting | Yes | Yes |
| Links |
Plans and pricing
Google Tag Manager
- StandardFree Tag Manager.Free
Supabase
- Free500 MB database, 5 GB egress, 1 GB file storage; limited to 2 active projects, paused after 1 week idle.Free
- ProPer organisation, includes $10 monthly compute credit; usage-based beyond included quotas; no pausing.$25/mo
- TeamPer organisation, adds SOC2 and ISO 27001 compliance, SSO-style access controls and longer backups.$599/mo
Prices as the vendors list them. They change often; the final price is on their sites.
Who each is for
Choose Google Tag Manager if…
Marketers and developers who manage analytics, advertising and conversion tags across one or many websites and want to publish changes without a code deployment each time.
Choose Supabase if…
Technical founders and developers who want a managed Postgres database with built-in auth, APIs, storage and realtime for a web or mobile app, with the option to self-host later.
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