Synology Calendar Sync with Android and iPhone

Whatever brand of Android phone you are using, most people are "directed" to sync with either Google account, Samsung cloud account or Huawei cloud account. That means your contacts are all stored on cloud and you have virtually no control of your data. Privacy is at risk.

However, if you have a Synology NAS, you can easily take back your control!

Synology Calendar FREE package

Allow permission for this app to specific user in Control Panel > Application Privileges.

If you are not going to allow users one by one, you may allow the "users" group which is built-in lowest privilege group.

Then you can login with any user to use Synology Calendar App.

Android Phone

DAVx5 App Setup to Sync Calendar Events

For how to download and install DAVx5 open source version, please refer to another article:

Synology Contacts Sync with Android Phone

Whatever brand of Android phone you are using, most people are “directed” to sync with either Google account, Samsung cloud account or Huawei cloud account. That means your contacts are all stored on cloud and you have virtually no control of your data. Privacy is at risk. However, if you

Irvin's Tech BlogIrvin Yip

Once installed DAVx5 on your Android mobile, start the setup as below. For the Base URL, it should look like:
https://yourname.synology.me:5001/caldav/user_name

User credential is the user name and password that already exists on your Synology NAS.

iPhone

On iPhone, you do not need to install any app as it is built-in supported. Go to Settings > Contacts > Accounts > Add Account

Then input the server link above, user name and password. It's done!

Your phone's native calendar app is now in-sync with your Synology Calendar. You may put in some entries on either side and test it out. Congratulations, you own your calendar data from now on!