How to sync iPhone Calendar with Mac without iCloud

Your calendar is on your iPhone, but planning a week or moving appointments around is easier with a keyboard and a larger screen. You want to use Calendar on your Mac without turning on iCloud Calendar or signing into any other calendar service on that computer.

ICS Toolkit gives you two ways to do that. Server Mode connects the Mac directly to selected calendars on your iPhone over your local network. Export Calendars saves events to an .ics file that you can transfer and import on the Mac.

One detail about “without iCloud”: ICS Toolkit requires no registration, and neither workflow uses iCloud or requires a new cloud calendar account. For Server Mode, macOS still asks you to add a local CalDAV “account” using credentials supplied by the app. If you want to avoid adding even that connection, use the file transfer method.

What you need

• An iPhone with ICS Toolkit and the calendars you want to access.
• A Mac with Apple’s built-in Calendar app.
• For Server Mode, both devices on the same trusted local network, such as your home Wi-Fi.
• Full Calendar Access for ICS Toolkit, plus Local Network permission if iOS asks when you start the server.

The screenshots in this article show ICS Toolkit 2.0.0 with example calendars. Use the connection values displayed on your own iPhone when following the steps.

1. Choose which iPhone calendars to share

Open ICS Toolkit and tap Server Mode in the Tools list. Allow Full Calendar Access, then open Shared Calendars and select the calendars you want to see on your Mac. You can start with just one. Each selected calendar appears as a separate calendar on the Mac.

The Create new calendars in setting controls where calendars created from the Mac will be saved on the iPhone. Choose the destination you intend to use before starting the server.

If you only want to look at your events on the Mac, turn on Read-Only Publishing. The Mac can then display the shared calendars but cannot change them. Leave it off if you want to add and edit events from the Mac. Calendars that are read-only on the iPhone, such as Birthdays or subscribed calendars, stay read-only either way.

Server Mode works with calendars already available on the phone. If one of those calendars belongs to iCloud, Google, or another provider, its existing sync behavior still applies. The local connection does not turn a cloud calendar into a device-only calendar.

2. Set the hostname and start Server Mode

Open Connection. Before the first start, enter a Local Hostname for the iPhone. Build it from the name in Settings → General → About → Name: use lowercase letters, replace spaces with hyphens, and add .local. For example, “Studio iPhone” becomes studio-iphone.local. The default Port is 5232. You can change these settings only while the server is stopped.

Go back and tap Start Server Mode. Allow Local Network access if prompted. When the status changes to Running, open Connection again. It now shows everything your Mac needs: server address, server path, port, user name, and password.

Keep ICS Toolkit open and active on the iPhone while you connect and work. The server stops when the app goes into the background and must be started again manually. For longer sessions, connect the phone to power and keep Prevent Auto-Lock while serving turned on in Connection.

Server Mode uses HTTP with Digest authentication. Digest protects the password, but calendar names and event contents travel without encryption. Use this connection only on a trusted local network.

Transfer a calendar without adding an account

If you only need a copy of your events on the Mac, export an ICS file. An .ics file is a calendar document that Apple Calendar can import. This workflow needs no CalDAV connection and no running server.

1. In ICS Toolkit, tap Export in the Tools list, then Export Calendars. Allow Full Calendar Access.
2. Select the calendar to export. Keep Dates set to All Dates for a full copy, or choose Next 12 Months or Custom Dates. If you select several calendars, you can also turn on Combine into One File.
3. Tap the export button at the top of the screen to prepare the file. When Files ready appears, check the event count.
4. Tap Share ICS Files to send the file to the Mac, for example with AirDrop. You can also choose Save ICS Files and transfer the saved file yourself.
5. On the Mac, open Calendar and choose File → Import. Select the .ics file.
6. Choose a destination calendar and complete the import. Use a calendar in On My Mac to keep the imported copy local to that computer.

Apple’s calendar import guide also explains how to create a destination calendar or drag an ICS file directly into Calendar.

An imported file is a separate copy. Later edits on the Mac do not update the iPhone, and later iPhone changes do not update that copy. Repeated imports can also create duplicates, so use a separate destination calendar if you are trying the workflow for the first time.

ICS Toolkit exports the events synced to the iPhone, including events from read-only calendars. With All Dates, repeating events keep their repeat rules and edited occurrences. With a limited date range, each repeating event is exported as individual occurrences within those dates. iOS does not provide event attachments or all deleted repeat exceptions for calendar export. Deleted occurrences may reappear after import, so check repeating events in the imported copy.