Frequently Asked Questions

Shelter is a household emergency preparedness app for European households. It helps you build an emergency kit, secure important documents, create a family plan, and understand emergency scenarios — all based on official government guidelines.

Yes. The core features are free forever. Premium unlocks unlimited vault documents, family members, custom items, all scenarios, vault export, and PDF export for €2.99/month.

46 European countries, with kit checklists sourced from official civil protection agencies like BABS (Switzerland) and BBK (Germany).

No. All data stays on your device. We have no analytics, no tracking, no advertising SDKs. The app works entirely offline.

AES-256-GCM encryption with keys derived from your PIN via Argon2id. Only you hold the key. Not even we can access your documents.

The core library (shelter-core) is MIT licensed and publicly auditable. The content and backend are proprietary.

Yes. Shelter follows GDPR Article 25 (privacy by design). No personal data is collected unless you explicitly create an account (future feature).

Yes, completely. Every feature works without internet. Shelter is offline-first by design.

No. Shelter works on any Android device, including GrapheneOS and CalyxOS. Available on Accrescent and as a direct APK download.

iOS 17 or later.

Android 8.0 (Oreo) or later.

A 0–100 score based on four categories: emergency kit (35%), document vault (25%), family plan (25%), and knowledge (15%). It shows how prepared your household is.

Official government civil protection agencies. For Switzerland: BABS (Federal Office for Civil Protection). For Germany: BBK (Federal Office of Civil Protection and Disaster Assistance). Each country's list is sourced directly from its national agency.

At least every 6 months. Check expiry dates on food, water, and medications. Shelter sends optional reminders.