Contacts+ Personal CRM vs Contact Book

Contacts+ Personal CRM9.0Visit Contact Book8.5Visit

Higher score Contacts+ Personal CRM #2 in Personal CRM Software 9.0/10 Free plan Free plan✓ 4 of 4 features Visit Contacts+

vs

Contact Book #6 in Personal CRM Software 8.5/10 Free plan Free plan✓ 3 of 4 features Visit Contact Book

• Contacts+ Personal CRM fits best

  People needing a full personal CRM

• Contact Book fits best

  API-oriented personal CRM users

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Side by side

Feature	Contacts+ Personal CRM 9.0/10 Visit ↗	Contact Book 8.5/10 Visit ↗
At a glance
Editor score	9.0	8.5
Ranking	#2 in Personal CRM Software	#6 in Personal CRM Software
Best for	People needing a full personal CRM	API-oriented personal CRM users
Pricing model	Free plan + paid	Free plan + paid
Starting price	$9.99/user/mo	€100/yr
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Mobile	Cloud, Browser extension
Platforms	Web, iOS, Android	Web
Support	Docs	Email, Docs
Integrations	11 integrations	7 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business
Features Contacts+ Personal CRM 4/4 · Contact Book 3/4
Follow-up reminders	✓	✓
Email/calendar sync	✓ (best)	—
Import/export	✓	✓
Interaction history	✓	✓
Specs
Contact limit	1000 contacts	Not checked yet
Mobile apps	Not checked yet	Web
Our review
Pros	Free plan supports 1,000 contacts and daily sync Two-way sync covers Google, iCloud and Microsoft/Outlook Notes, reminders, imports and AI contact capture support follow-up	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	Free plan syncs only one account Quick real-time sync starts on Premium Team features require the Teams plan	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	Contacts+ Personal CRM is a unified address book and personal CRM for people managing professional and personal relationships. It combines contact sync, duplicate detection, notes, dated relationship context, follow-up tasks and reminders… 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 →

Strengths and trade-offs

• Contacts+ Personal CRM — where it wins

  • Free plan supports 1,000 contacts and daily sync
  • Two-way sync covers Google, iCloud and Microsoft/Outlook
  • Notes, reminders, imports and AI contact capture support follow-up

  Where it doesn't

  • Free plan syncs only one account
  • Quick real-time sync starts on Premium
  • Team features require the Teams plan

• 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

• Contacts+ Personal CRM9.0/10 · Free plan

  A broad personal CRM with free core tools and useful paid upgrades.

  Visit Contacts+Full verdict →
• Contact Book8.5/10 · Free plan

  A feature-rich personal CRM with unusually broad API and automation access.

  Visit Contact BookFull verdict →