Eurobase vs Supabase: the EU-sovereign Supabase alternative

Supabase EU region is not GDPR-safe — US-owned means CLOUD Act reach. Eurobase: same PostgreSQL, same DX, EU company, hosted in France, GDPR-native. Migrate off Supabase in an afternoon. €25/mo per project once you go live.

Same foundation, different jurisdiction

Eurobase and Supabase are both built on PostgreSQL with REST + realtime, auth, storage, edge functions, and vault. The differences are architectural, not superficial: where the bytes physically sit, which corporate parent operates the platform, and which laws bind the operator when a government asks for access.

Supabase Inc. is a Delaware C-corp headquartered in San Francisco, running its managed platform on AWS. Even when you choose a Supabase EU region, the control plane and the parent company remain under US jurisdiction — which is why the CLOUD Act question keeps coming up in regulated procurement.

Eurobase is operated by Eurobase OÜ, an Estonian private limited company registered on 22 July 2026 (registry code 17557586, Ahtri 12, Tallinn). Every processor in the critical path — database, storage, edge functions — is EU-owned and physically in France (Scaleway fr-par). No AWS, no GCP, no Azure. If you are searching for "Supabase Europe" and want the sovereignty answer without the caveats, that combination is what changes.

Is Supabase GDPR compliant? The 90% answer and the 10% gap

Yes — Supabase ships a GDPR Data Processing Addendum, offers standard contractual clauses, honours data-processing terms, and lets you pick a Frankfurt region so personal data physically stays in the EEA. For most SaaS teams that is enough to close the compliance ticket. The 10% gap is what your DPO cares about: the CLOUD Act, sub-processor architecture, and DSAR mechanics.

First, the CLOUD Act. A DPA is a contract between you and your processor; it does not override statutes that the processor is subject to. Supabase Inc. is subject to US law, including the CLOUD Act (18 U.S.C. §2713) and FISA §702, which authorise US authorities to compel disclosure of data held by US-headquartered providers regardless of where the data physically sits. The EDPB has been explicit about this in recent guidance: the risk survives EU-region hosting when the provider or an upstream processor is under US jurisdiction. A green tick on a compliance page does not neutralise a Cloud Act warrant.

Second, sub-processor mapping. Under Article 30 of the GDPR you are required to keep a Record of Processing Activities that lists every sub-processor, its role, and the transfer mechanism. Supabase's public sub-processor list includes AWS (US corporation), Vercel (US corporation), and other US-headquartered vendors; each one needs its own transfer analysis in your RoPA. Eurobase's sub-processor list is Scaleway (France), GatewayAPI (Denmark) for SMS, and Mollie (Netherlands) when paid plans switch on — all EU-headquartered, all under EU jurisdiction, and the list is auto-generated in every project's Compliance tab as a downloadable Article 30 record.

Third, DSAR mechanics. GDPR Articles 15 and 20 give data subjects the right to access and port their personal data within 30 days. On Supabase you write the SQL: walk auth.users, join every table with a user_id column, gather Storage files, zip them, deliver, log. Every DSAR is a mini-engineering ticket. Eurobase ships a one-click console export plus an SDK call (eb.auth.exportMyData()) that end-users can trigger themselves — rate-limited, audit-logged, signed download links that expire after 7 days.

• ▸Physical data residency in the EU: Supabase = yes (with region choice). Eurobase = always, no toggle.
• ▸DPA + Standard Contractual Clauses: Supabase = yes. Eurobase = yes.
• ▸CLOUD Act exposure through the provider: Supabase = yes (Delaware corp). Eurobase = no.
• ▸Sub-processors under EU jurisdiction: Supabase = partial (AWS, Vercel are US). Eurobase = 100%.
• ▸Built-in DSAR export (Art. 15 + 20): Supabase = DIY SQL. Eurobase = one click on every tier, free included.
• ▸Article 30 RoPA report: Supabase = you write it. Eurobase = auto-generated from live sub-processor registry.

Read the full DPO-eye analysis: Is Supabase GDPR compliant? →

The Supabase EU region: what physical residency does — and does not — do

Supabase lets you provision projects in Frankfurt (eu-central-1) or Ireland (eu-west-1). Doing so puts the Postgres primary and the Storage bucket physically inside the EEA, which handles the residency dimension of GDPR. It does not, on its own, answer the CLOUD Act question — because "residency" and "jurisdiction" are different vectors.

Residency is about physical location. Jurisdiction is about which state's courts and warrants reach the operator. A Supabase EU-region project keeps your database bytes in Frankfurt, but Supabase Inc. — the entity that operates the control plane, holds the encryption keys, and can execute a "restore this project" command — is a Delaware C-corp answerable to US courts. When the FBI serves a §2703(d) order on Supabase Inc., the location of the disk does not enter the analysis.

The Microsoft France testimony under oath at the French Senate in June 2025 made this concrete: Microsoft France said they cannot guarantee that data stored in their EU regions stays out of US reach, because the Redmond parent can be compelled by a US warrant regardless. The same logic applies to every US-headquartered provider — Supabase, Vercel, MongoDB, Snowflake, Datadog — whether or not they run EU regions.

Eurobase closes this vector by removing the US-parent from the graph. Eurobase OÜ is an Estonian company. Scaleway is a French company (a subsidiary of Iliad, French). GatewayAPI is Danish. Mollie is Dutch. No hop in the critical path goes through a jurisdiction outside the EEA. That is the difference between "our data is in Europe" and "our provider is Europe."

Deeper dive: the Supabase DPA — what it covers, what it does not, and the Article 28 vs 30 distinction →

Looking for a Supabase EU alternative? Three questions that decide it

The Search Console query "supabase eu alternative" tends to come from two audiences: startups in regulated industries (health, fintech, gov-tech, edu-tech) whose DPO has flagged the CLOUD Act, and enterprises whose procurement checklist added an EU-parent requirement after the 2024–2025 sovereignty wave. Three questions decide whether Eurobase is the right substitute:

If the answer to all three is "yes," the honest recommendation is Eurobase. If (2) or (3) are not requirements — for instance, you already run auth in-house and only need a managed Postgres — a bare EU Postgres from Scaleway or OVHcloud is often the cheaper fit. We would rather send you to the right tool than the biggest one.

For teams already deep into Supabase, the migration path is a first-class citizen: the Eurobase CLI ships eurobase import supabase with assess / schema / data / storage / functions subcommands that read your existing project read-only, emit an executable plan, and apply it against a fresh Eurobase project. Auth-users import is the remaining piece and ships next.

• ▸(1) Do you need EU corporate parent, not just EU region? If yes, Eurobase and OVHcloud are the two mainstream managed options. Supabase EU region does not satisfy this filter.
• ▸(2) Do you need Postgres + built-in auth + storage + realtime + edge functions in one platform? Eurobase ships all five as a Supabase-compatible surface; OVHcloud Managed Database gives you Postgres only.
• ▸(3) Do you need GDPR primitives (DSAR export, RoPA, audit log) built into every tier without paid add-ons? Eurobase ships them free-tier included; Supabase gates advanced compliance features behind Team ($599/mo) and Enterprise plans.

Supabase EU hosting compared to a Europe-native backend

The search "supabase eu hosting" typically means one of two things: "does Supabase have EU regions?" (yes — Frankfurt and Ireland) or "what does an EU-first alternative to Supabase hosting look like?" (an Estonian-parent operator running exclusively on Scaleway in France, with no US-owned processor in the critical path — Eurobase). Both are valid. The choice depends on which vector you need to close.

• ▸Physical DB region — Supabase: choose Frankfurt or Ireland at project create. Eurobase: always Scaleway fr-par (Paris/France).
• ▸Storage region — Supabase: same EU region as the project. Eurobase: always Scaleway Object Storage fr-par.
• ▸Edge Functions region — Supabase: multi-region (US + EU). Eurobase: fr-par only.
• ▸Control-plane jurisdiction — Supabase: US (Delaware). Eurobase: Estonia.
• ▸Sub-processor list — Supabase: mixed (includes AWS, Vercel — US). Eurobase: 100% EU-headquartered.
• ▸CLOUD Act reach — Supabase: yes through the parent. Eurobase: no.

How your app code changes when you move from Supabase to Eurobase

For most Supabase apps, moving to Eurobase is closer to a config swap than a rewrite. The SDK shape mirrors Supabase intentionally — the goal is that a Supabase engineer feels at home within an hour, not that they learn a new abstraction.

The client SDK import changes from @supabase/supabase-js to @eurobase/sdk. The createClient(url, key) signature is the same. auth.signUp, auth.signInWithPassword, auth.signInWithOAuth, from(table).select(), rpc(fn, args), storage.from(bucket).upload — all present with matching semantics. Row-level security uses PostgreSQL RLS, so policies that worked on Supabase move over with a search-and-replace on the auth.uid() helper (Eurobase uses eb.auth.uid() as a SECURITY DEFINER helper that returns the same UUID shape).

Realtime subscriptions use the same channel-and-filter pattern (channel(name).on("postgres_changes", { event, schema, table, filter })). Edge Functions are Deno with the same std lib and the same request/response signatures — most Supabase functions compile as-is with only the import URL updated. The CLI substitutes 1-for-1 for the day-to-day workflow: eurobase login, eurobase link, eurobase db push, eurobase functions deploy.

The gaps to be honest about: Supabase's SAML SSO paid tier is not yet on Eurobase (planned for the Team tier, coming later in 2026). Supabase Vector (pgvector managed) is on Eurobase's roadmap for 2027 as part of the sovereign-AI pipeline. Supabase Studio is more polished than the Eurobase console today; parity is a rolling target.

For everything else, the migration CLI (eurobase import supabase) walks assess → schema → data → storage → functions and prints a diff-and-apply plan. Auth-users import is next.

Pricing side by side

Supabase Pro is $25/mo per organization with usage-based overages on database, storage, and bandwidth. Eurobase Pro is €25/mo per project with fixed caps at Pro-tier levels; overage is a signal to upgrade to Team rather than a surprise line item.

One nuance worth flagging: Supabase counts MAUs per organization while Eurobase counts them per project. If you run many small projects on one Supabase org today, the Eurobase per-project pricing is simpler to reason about but you will pay for each active project rather than pooling MAU. That is a deliberate design choice — every Eurobase project is its own tenant with its own Postgres schema, its own audit log, and its own DSAR export, which matches how regulated teams tend to want to compartmentalise.

• ▸Free tier — Supabase: 50k MAU, 500 MB DB, 1 GB storage, 5 GB bandwidth, 200 realtime, pause after 7 days idle. Eurobase: 5k MAU, 512 MB DB, 512 MB storage, 2 GB bandwidth, 50 realtime, pause after 30 days idle. Every feature included; the tighter caps trade for a longer idle window and every-tier GDPR primitives.
• ▸Paid tier — Supabase Pro: $25/mo per org, usage-based over 100k MAU / 8 GB DB / 100 GB storage / 250 GB bandwidth. Eurobase Pro: €25/mo per project, fixed 100k MAU / 100 GB storage / 250 GB bandwidth / 10k realtime.
• ▸Team tier — Supabase Team: $599/mo per org (SSO, log retention). Eurobase Team: €149/mo per project (dedicated PostgreSQL 16 on 2 vCPU / 4 GB RAM / 50 GB SSD, daily backups + on-demand snapshots, SSO, RBAC, audit trail; SOC 2 Type II coming soon). Coming soon.
• ▸Billing entity — Supabase: Supabase Inc. (Delaware). Eurobase: Eurobase OÜ (Estonia). Some EU procurement teams treat this as a hard requirement for VAT-reverse-charge simplicity.

Feature comparison

Supabase vs Eurobase — FAQ

Related reading

• Move off Supabase in one CLI command — what the migrator does and why teams are asking now →
• Supabase GDPR + DPA: what an EU-region deployment actually gets you →
• The $1,500 GDPR Tax: Why DSAR fulfilment belongs in your platform →
• The AI kill-switch and the case for EU sovereignty →
• How the one-click DSAR feature works →