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Head-to-head · Personal CRM Software

Monica vs Contact Book

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Monica #5 in Personal CRM Software 8.6/10 Free plan · 30-day trial Free planFree trial✓ 0 of 4 features Visit Monica
Contact Book #6 in Personal CRM Software 8.5/10 Free plan Free plan✓ 3 of 4 features Visit Contact Book

Monica leads on 0 checks, Contact Book on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMonica · 8.6/10
  • Free planboth
  • Free trialonly Monica
  • Most featuresContact Book · 3 of 4

Monica scores higher on our rubric for personal crm software: 8.6 against 8.5 out of 10; our editors rank them #5 and #6.

Monica is the better fit for self-hosters wanting a mature CRM. Contact Book is the better fit for API-oriented personal CRM users.

  • Monica fits best

    Self-hosters wanting a mature CRM

  • Contact Book fits best

    API-oriented personal CRM users

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Side by side

Feature Monica 8.6/10 Visit ↗ Contact Book 8.5/10 Visit ↗
At a glance
Editor score 8.6 8.5
Ranking #5 in Personal CRM Software #6 in Personal CRM Software
Best for Self-hosters wanting a mature CRM API-oriented personal CRM users
Pricing model Free plan + paid Free plan + paid
Starting price $90/yr €100/yr
Free plan ✓ ✓
Free trial 30 days —
Deployment Cloud, Self-hosted, Browser extension Cloud, Browser extension
Platforms Web Web
Support Email, Community, Docs Email, Docs
Compliance 2FA GDPR
Built for Solo, Small business Solo, Small business
Features Monica 0/4 · Contact Book 3/4
Follow-up reminders Not checked yet ✓ (best)
Email/calendar sync Not checked yet —
Import/export Not checked yet ✓ (best)
Interaction history Not checked yet ✓ (best)
Specs
Contact limit Not checked yet Not checked yet
Mobile apps Not checked yet Web
Our review
Pros
  • Free self-hosting with the full open-source application
  • Tracks relationships, notes, reminders, birthdays, and activity history
  • Supports vCard, CSV, data export, and REST API automation
  • Free plan includes profiles, history, reminders, events, gifts, and relationships
  • API, CLI, MCP, webhooks, GraphQL, and client libraries
  • Self-service export and account deletion are available
Cons
  • Native iOS and Android applications are planned for a future version
  • Company records are described as future v3 functionality
  • Hosted use requires a monthly or annual subscription
  • Access is web-first rather than through native mobile apps
  • Email and calendar sync are not included
  • Open-source deployment is not available
Our verdict

Monica is a personal relationship management application for individuals and households. It brings contact details, custom information, relationships, notes, journal entries, activities, important dates, and reminders into a web-based…

Read the review →

Contact Book is a hosted personal CRM for individuals who want more than a basic address book. It combines contact profiles, personal details, conversation and activity history, notes, journals, follow-up reminders, life events, birthdays,…

Read the review →
  1. MonicaPersonal CRM Software 8.6Free plan · 30-day trial
  2. Contact BookPersonal CRM Software 8.5Free plan

Strengths and trade-offs

  • Monica — where it wins

    • Free self-hosting with the full open-source application
    • Tracks relationships, notes, reminders, birthdays, and activity history
    • Supports vCard, CSV, data export, and REST API automation

    Where it doesn't

    • Native iOS and Android applications are planned for a future version
    • Company records are described as future v3 functionality
    • Hosted use requires a monthly or annual subscription

  • Contact Book — where it wins

    • Free plan includes profiles, history, reminders, events, gifts, and relationships
    • API, CLI, MCP, webhooks, GraphQL, and client libraries
    • Self-service export and account deletion are available

    Where it doesn't

    • Access is web-first rather than through native mobile apps
    • Email and calendar sync are not included
    • Open-source deployment is not available

More comparisons

All personal CRM software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update