SmoothSync for Cloud Calendar

SmoothSync for Cloud Calendar

100,000 - 500,000 downloads

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SmoothSync for Cloud Calendar syncs your iCloud calendars and reminders. Due to its implementation as sync adapter it integrates seamlessly with the native calendar app and widgets and operates invisible in the background.

Also, check out SmoothSync for Cloud Contacts to sync your iCloud contacts!

Important note for Android 4.1 and Samsung users: To prevent the removal of your accounts on reboot install this app (before you install SmoothSync):

Please note that there is a new issue in Android 4.4:
It causes accounts to be removed when an app is updated. Installing the workaround app should help.

Get support and news via email or via Twitter at

The app is designed to be as user friendly as possible. So, just enter your account data, select your calendar and SmoothSync will keep your calendars in sync.

This app will create new calendars on your device (one for each calendar in your iCloud account). It will not sync calendars of other account (like Google) to iCloud.

Please, if you find a bug send me an email. Without detailed error description I often can't do anything especially when I can't reproduce it.

Important! If your phone removes the accounts on reboot, move the App back from SD card to the phone. Some phones (if not all) can't handle sync adapters on SD Card properly.

The last screen shot shows the calendar selection dialog of the event editor of the stock calendar app.

Thanks to the guys at for their support!!

* two-way-sync
* supports multiple accounts
* supports subscribed calendars
* initial support for attachments (Android 4.1 or newer, doesn't work with all calendars apps)
* supports reminders if this app is installed:
* multiple calendars per account
* automatic calendar discovery
* automatic sync of calendar colors and names
* syncs multiple alarms
* time zone support
* customizable sync interval (default: 4h, local changes will be synced almost immediately)
* synchronizes entire calendar
* encrypts passwords

known limitations:
* no "push" support (yet)

iCloud and Apple are trademarks of Apple Inc., registered in the U.S. and other countries. The author of this app is not related to Apple in any way.

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Recently changed in this version

Please install the workaround app before you upgrade if you're using Android 4.4 (see the app description). Also, please contact us if something doesn't work as expected.

new in 1.8.4:

many minor fixes & improvements

Comments and ratings for SmoothSync for Cloud Calendar
  • (74 stars)

    by mcpcmjmcc on 28/12/2012

    I have downloaded Smoothsync onto my Samsung Galaxy. I can see my I Mac calendar on my Galaxy along with my other calendars but I cannot see my Samsung calendar on my I Mac. I have NOT ticked the one way sync option. Any advice?

  • (74 stars)

    by Randy Jones on 18/06/2014

    Works really great syncing my iCloud calendar.

  • (74 stars)

    by Emily Doyle-Yamaguchi on 14/06/2014

    Generally this App has been great. But I did have a login issue one day where the program seemed to have forgotten my login information and wouldn't accept it when I re-entered. It turns out this was because there was an update that I hadn't downloaded yet. The error message did not point me in this direction, but luckily I found a forum that provided that tip. Would be better if error messages we

  • (74 stars)

    by Steve Williams on 13/06/2014

    Beware, this app *does not* sync iCloud calendars on my new HTC One M8 running Android 4.4.2. However, it did sync ok on my previous phone, a rooted Samsung GS3 (Cyanogenmod) running Android 4.3.1. Did not get much help from the developer.

  • (74 stars)

    by R Cirz on 11/06/2014

    Very good app until something happens and it forgets your iCloud login aand all your calendar appointments are gone. This happened twice in 3 or 4 days to me you have to re login and resync the calendar every time

  • (74 stars)

    by Kevin Kurtz on 10/06/2014

    I needed to sync a friends iCloud calendar. Installation went smooth. I set up the iCloud account and like magic, I had the calendars that she wanted to share with me. Great app. Thanks

  • (74 stars)

    by Shari Cangelosi on 10/06/2014

    Been using this now for almost two years. Totally syncs my iCal w my android devices. A great purchase. Extremely satisfied. Thanks for making such a wonderful app Marten Gajda!