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

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.
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
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.
GDPR questions
Free plan, no credit card. We host in Germany. Export + delete are self-serve.
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| Ours Contact Book | Theirs Obsidian vault | |
|---|---|---|
Local plain-text storage | ||
Reminders that fire on time | ||
Overdue dashboard | ||
Mobile UX | Limited | |
Cross-device sync | DIY | |
Markdown export | ||
Hosted in Germany | Local |