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Enterprise Contacts vs CiraSync.

CiraSync is a broad, long-established sync platform for contacts and calendars across Microsoft 365, Google and CRMs. Enterprise Contacts does one narrow job: the Microsoft 365 Global Address List in the iPhone's native Contacts app, free.

	Enterprise Contacts	CiraSync
Price	€0 for any number of users	Not published; pricing goes through a demo
Trial	Not needed: free forever, no credit card	Free trial available
What it syncs	Microsoft 365 contacts: Entra ID security groups, shared Exchange mailboxes, personal Exchange contacts	Contacts and calendars from Microsoft 365, Google and CRMs such as Salesforce and HubSpot
Where contacts land	The native iOS Contacts app, through Apple's ContactProvider framework	Each user's Outlook and smartphone, per CiraSync
Phones	iPhone and iPad (iOS 18.2+)	“Every employee device”
Editions	One free app plus the Web Admin	CiraSync Cloud, Hub and On-Prem; MDM / CardDAV option
Compliance	GDPR privacy policy; usage data in Azure Sweden Central (EU), can be switched off. No SOC 2 report.	SOC 2 compliant, GDPR ready
Getting started	Self-serve: consent, source groups, App Store link. About 10 minutes.	Sales-led: “Talk to a Human” or start a trial
Track record	New, built and run by one developer in Denmark	20+ years; “Trusted by 3,000+ Enterprises Worldwide”

CiraSync details as published on cirasync.com in October 2026.

Pick CiraSync if…

You need calendars, CRM contacts or Google directories synced, not just Microsoft 365 colleagues.
You run Android phones, or need an on-premises deployment.
Your security review requires a SOC 2 report and a vendor with a long track record.

Pick Enterprise Contacts if…

The job is caller ID and autocomplete for colleagues on iPhones, and nothing more.
You want a published price (€0) and no sales call before you can start.
You want contacts to go from Microsoft Graph straight to the phone, with no contact server in between.

FAQ

For one job, yes: getting Microsoft 365 colleagues into the native iPhone Contacts app so internal calls show a name. CiraSync covers much more, including calendars, CRM sources, Google and on-premises deployment.

CiraSync does not publish prices on its website; pricing goes through a demo. Enterprise Contacts is €0 for any number of users, with no contract.

Not with Enterprise Contacts. A Global Administrator grants consent, an IT admin creates source groups in the Web Admin, and users install the free app. Setup takes about 10 minutes.

Try it on your tenant.

Free for any Microsoft 365 tenant. No credit card. No MDM. Set up in about 10 minutes.

Read the IT Admin Guide