Contact Book

Contact Book is a personal CRM for solo users who want rich context around friends, family, clients, or community contacts. It suits people willing to maintain their own records and who value control over exported data. The central trade-off is clear: relationship tools are extensive, but email and calendar sync are absent.

Overview

Each contact profile can hold email addresses, phone numbers, companies, physical addresses, birthdays, social links, food preferences, allergies, and the story of how you met. A relationship graph, interaction timeline, life events, gifts, follow-up reminders, and journal appear alongside those details. This is a stronger fit for deliberate relationship management than for a simple address book: you can preserve personal context and plan the next touchpoint, but current information depends on manual upkeep.

Contact Book gives users direct control of their records. Everything can be exported, and account deletion is available from self-service settings. The operator says it does not sell data, share it with advertisers, or use third-party analytics or session recording on logged-in pages. Application servers and the database are hosted in Germany on operator-managed infrastructure. Public endpoints use TLS 1.3, disks are encrypted at rest, and backups are encrypted before leaving the primary host. Daily snapshots remain for 30 days at another physical location, with quarterly restore tests. Those measures will matter to users keeping sensitive relationship notes.

Key features

Relationship context and follow-ups

The combination of profiles, graph, timeline, life events, gifts, journal entries, and reminders keeps personal history in one place. It can help a freelancer remember a client's preferences, a volunteer coordinate contacts, or a parent track family milestones. Interaction history and follow-up reminders add practical continuity, while the missing email and calendar sync means incoming correspondence and appointments will not update records automatically.

Automation and access

An HTTP API, CLI, and MCP access the same data and permission rules. GraphQL, WebSockets, signed outgoing webhooks, and client libraries for multiple languages provide room for custom workflows. Google, LinkedIn, GitHub, or Microsoft sign-in may be available instead of a password. The web application is also exposed through an API, but there is no native mobile app.

Support and recovery

The founders handle support emails themselves, and monitored addresses are usually answered within one working day. A refund of the most recent charge is available through account settings during the first 30 days of any new paid period.

Pricing

The free plan removes subscription cost, while Standard offers the paid tier at either monthly or annual billing. Annual billing totals less than twelve monthly payments, but requires upfront commitment. Published plan limits and seat quotas are not provided, so teams should not assume multi-user capacity; the product is designed for solo use. The 30-day refund window applies to the latest charge in each new paid period, not an unlimited historical refund.

Platforms

Contact Book runs on the web and provides an API. There are no mobile apps, so phone and tablet users access it through a browser rather than a dedicated iOS or Android client.

Who it's for

This is aimed at solo users maintaining a personal CRM: people organizing friends and family, professional networks, parents, freelancers, and volunteers. Choose it when nuanced personal records, reminders, exportability, and German-hosted infrastructure matter more than automatic synchronization. Look elsewhere if a native mobile experience or email and calendar connection is essential.

Pros and cons

• Pros: unusually broad personal context, including gifts, life events, preferences, allergies, and how you met someone.
• Pros: relationship graph, interaction history, journal, and follow-up reminders support ongoing outreach.
• Pros: export and account deletion are self-service, with encrypted storage and geographically separate tested backups.
• Pros: API, CLI, MCP, webhooks, and client libraries support custom integrations.
• Cons: no email or calendar sync, so records require manual maintenance.
• Cons: web-only access means no dedicated mobile application.
• Cons: the published offer does not state quotas or seat limits, which makes capacity planning difficult beyond solo use.

Alternatives

For a mobile-first option with Android and iOS apps, daily sync, and 1,000 contacts on its free account, choose Contacts+ Personal CRM. Kinu is better if you need encrypted backup and a free tier for up to 10 people, though its free plan has no cross-device sync. Pick Dextr for iOS and macOS with unlimited free contacts, AI organization, and reminders. Kithmap is a free macOS and web open-beta alternative. Revere suits iOS and macOS users wanting unlimited people, notes, and reminders. Coleva is an iOS alternative from an independent UK developer. Foundationbase Personal CRM is a free, MIT-licensed web choice. Hilo is a no-cost iOS option without subscriptions. Browse the Personal CRM Software list for more choices.

Verdict

Choose Contact Book if you are a solo user who wants a detailed, durable record of relationships with strong data controls and automation access. Its main reason to look elsewhere is the lack of email and calendar sync, compounded by web-only access; users who expect contacts to update from their daily communication will be better served by a more connected alternative.