Who is my contractual counterparty?

Finn Glas, a German sole proprietor based in 72461 Tailfingen, Germany. Address, press contact under §18(2) MStV and every disclosure required by §5 TMG live at /imprint.

Where is the data stored?

On dedicated servers we operate ourselves, physically located in Germany. Records, attachments, audit log, embeddings - all in the same EU jurisdiction. Backups stay within Germany at other physical locations and roll off on a 30-day window. We deliberately don't name the exact provider or data centre - it doesn't help the customer and would make operator changes a public event.

Which law applies in case of a dispute?

German law, excluding the UN Convention on Contracts for the International Sale of Goods. Mandatory consumer protection rules of your country of residence remain unaffected. Venue is the registered seat of the operator (see /imprint), where legally permitted. No arbitration clause - you have the same legal recourse as with any other German vendor.

Can I get German-language support?

Yes. Both co-founders reply in German and English. No outsourcing, no ticket queue, no bot replies - you talk to someone who wrote the code.

How does the invoice + refund work?

Stripe issues a PDF invoice automatically after every payment, with VAT shown where applicable (the German Kleinunternehmer status under §19 UStG can drop the VAT line - the invoice is still fully bookkeeping-grade). Refund is self-serve in account settings: within the first 30 days of any new paid period you can refund the most recent charge yourself - no email, no exit interview. Full text in /terms §4.

Contact Book

Compare

Contact Book: the German alternative to Airtable

Hosted in Germany, German operator of record, German law. Same three pillars, English URL.

German alternative

Personal CRM

Airtable

Finn GlasCo-Founder + Engineering

·March 31, 2026·

1 min read

Contact Book is the German alternative to Airtable: hosted in Germany, German operator of record, German law applies. Three things that travel together for a reason - any one of them on its own is half a promise.

At a glance

Airtable is the most flexible CRM you can build - because it's not a CRM, it's a database. The flexibility is its strength and its trap. Past 500 rows the UI gets sluggish, custom views proliferate, and what was a tidy template becomes a junk drawer. Contact Book is purpose-built and stays fast at scale; the trade-off is you can't add a totally custom field type whenever you want.

Three pillars together

Three pillars that travel together

Hosted in Germany alone means little if the operator of record is a Delaware LLC - the CLOUD Act follows the seat, not the server. A German operator alone means little if the servers sit in Virginia - the access risk lives there. German law alone means little if both of those are missing - the venue clause cannot solve a data problem. Contact Book brings all three together: dedicated servers in Germany, Finn Glas (sole proprietor) registered in 72461 Tailfingen, German law on the contract. The gap to Airtable is usually that one of these three is missing.

Contact Book vs Airtable: German-vendor comparison

	Ours Contact Book	Theirs Airtable
Hosted in Germany
Custom fields	Constrained
Speed past 500 rows
Live multi-tab
Mobile UX (contact-shaped)
Cadence reminders		DIY
Free tier

When to pick which

Pick Contact Book when

You've already built an Airtable contact base and watched it slow down.

Reminders that fire on time matter more than infinite custom fields.

Pick Airtable when

You enjoy building your own database and the building is part of the value.

Total field freedom is non-negotiable for your use case.

Common questions

What German-buying teams typically want answered before they switch.

Start with Contact Book

Free plan, no credit card. We host in Germany. Export + delete are self-serve.

Written by

Finn Glas

Co-Founder + Engineering

Finn is one of the Co-Founders. He owns the engineering side, the infrastructure, and most of the late-night fixes that ship before anyone notices.

finn.glas at aicuflow dot comLinkedIn Website