Why does Google login show supabase.co instead of my app?
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Source checked 30 Sept 2026 · Published 1 Oct 2026 · Last reviewed 1 Oct 2026 · By Ctrl+Z Therapy (how we test)
The short answer
That address is your Supabase project's URL, and users see it when they sign in with Google. Supabase's fix is a custom domain, like auth.yourapp.com. It's a paid add-on for projects on a paid plan, $10 a month ($0.0137 per hour), and it isn't covered by the Spend Cap. Login works either way; this is about how it looks.
What to do
- Decide whether the look is worth paying for. Login works without it.
- If it is, add the custom domain add-on in Supabase (it needs a paid plan).
- Then sign in with Google again and check the address it shows.
Source
Checked on 30 Sept 2026. Prices, limits and settings change, so check the source before you rely on them.