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Enterprise Contacts vs Calliente.

Both tools do the same job: put your Microsoft 365 directory, the Global Address List, into the native Contacts app so internal calls show a name. Both read it with delegated Microsoft Graph permissions and keep contacts off their own servers. The differences are price, Android, and how you roll it out.

	Enterprise Contacts	Calliente
Price	€0 for any number of users	€6 (Standard) or €8 (Business) per user per year, billed annually
200-person company, per year	€0	€1,200–€1,600
Trial	Not needed: free forever, no credit card	30 days, no credit card
Phones	iPhone and iPad (iOS 18.2+)	iPhone and Android
Rollout	Share the App Store link; no MDM required	Intune, Workspace ONE, or App Store and Google Play for a pilot
Where contacts are stored	Microsoft 365 and the phone. No contact server.	Microsoft 365 and the phone. Calliente servers handle licensing and settings only.
Contact sources	Entra ID security groups, shared Exchange mailboxes, personal Exchange contacts	Entra ID directory; group filtering on the Business plan
Joiners and leavers	Background sync about every 2 hours; joiners and leavers usually show up within about half an hour	Automatic daily updates
Permissions	Six delegated, read-only Graph permissions	Delegated permissions to read your profile and the organisation directory
Admin tooling	Web Admin; configuration lives in Entra ID group descriptions	Calliente admin portal for groups, contact protection and licences

Calliente details as published on calliente.app in October 2026.

Pick Calliente if…

Your fleet includes Android phones. Enterprise Contacts is iPhone and iPad only.
You want to block employees from exporting work contacts to personal iCloud. Calliente's Business plan advertises this on iOS (Secure Call ID).
Procurement needs a vendor with a sales team and a support contract. Enterprise Contacts is built by one developer.

Pick Enterprise Contacts if…

Your phones are iPhones and you would rather not add a per-seat budget line for contacts.
You also want shared Exchange mailbox contact folders or personal Exchange contacts on the phone, next to the directory.
You want no licences to count: every user in the tenant is covered, now and as you grow.

FAQ

For iPhone and iPad fleets, yes. Both put the Microsoft 365 directory into the native Contacts app using delegated Microsoft Graph permissions. Enterprise Contacts costs €0 at any size; Calliente lists €6 or €8 per user per year. If you also need Android, Calliente covers it and Enterprise Contacts does not.

Calliente says its servers handle licensing and settings only, never contacts. Enterprise Contacts has no contact server at all: contacts go from Microsoft Graph to the phone and stay there, encrypted by iOS Data Protection.

Grant consent for the Enterprise Contacts iOS app, create source groups in the Web Admin, and share the App Store link. Once users have synced, remove the other app and its consent in Entra ID. The IT Admin Guide covers each step.

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