Is it possible to open native iOS app, e.g. calendar or notes, from an HTML link which is in website? I tried to find an example but I couldn\'t. I ran into these URL scheme
Yes you can very well possible to do that. You're right in placing the link like this:
Now go to your iOS app's info.plist file. In that add the following tags:
CFBundleURLTypes
CFBundleURLName
com.companyname.appname
CFBundleURLSchemes
calendar
Save the plist file and exit it. After this when you open the web page in Safari browser of your iOS device and click on the link, your iOS app will invoke. I hope it helps!