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Contact Book: the GDPR-friendly alternative to Obsidian vault

Plain-language privacy notice, standard German GDPR DPA available on request, self-serve export + delete.

GDPR alternative
Personal CRM
Obsidian
Finn Glas
Finn GlasCo-Founder + Engineering
·March 4, 2026·
1 min read

GDPR isn't a checkbox - it's a posture. If you're moving off Obsidian vault because their AVV / DPA is opaque, Contact Book is what a clean alternative looks like: subprocessor list of two (Stripe + mail relay), self-serve export + delete from account settings, and a standard German GDPR DPA on request when your procurement team needs one.

At a glance

An Obsidian contacts vault is appealing for the same reason a paper notebook is: portable, private, never going away. The cost is everything that requires active prompting - cadence reminders don't fire, life events don't surface, the Sunday review doesn't have an overdue list. Contact Book is what you reach for when the vault stops doing the work.

GDPR posture

GDPR is a posture, not a checkbox

Three things matter under GDPR for a tool like this: (1) lawful basis for processing, (2) data subject rights (export, delete, port), and (3) the auftragsverarbeitungs­vertrag / DPA chain. Contact Book treats them as engineering invariants, not legal optics. Lawful basis is the contract you sign with us. Subject rights are self-serve from your account settings - no support ticket required. The subprocessor list has two entries (Stripe + mail relay). A standard German GDPR DPA is available on request from /sales whenever your procurement team needs one - we don't charge for it and don't gate it behind a plan tier. Where Obsidian vault sits on each of these is the rest of this page.

Contact Book vs Obsidian vault: GDPR comparison

When to pick which

Pick Contact Book when

You want a system that nudges you, not just stores what you wrote.

Pick Obsidian vault when

Plain-text local-first is non-negotiable.
You enjoy designing your own template + script suite.

GDPR questions

What customer data-protection teams typically ask before signing a DPA.

Start with Contact Book

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

Finn Glas

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 comLinkedInWebsite