If you have a Mac computer and use the iCloud service, we strongly suggest you following these directions to setup Mac Calendar on your computer as that will automatically allow your iPhone, iPad, etc. to view the GoToList calendar as well.
To view a GoToList Calendar on your iPhone or iPad, following these simple directions to add a subscribed calendar on your iOS device.
From the GoToList app on your iPhone/iPad, copy the unique url for the calendar you wish to view by opening the Calendar of interest, select "Actions > Subscribe" and click on the "Copy Link" button.
On your iPhone or iPad, go to "Settings > Mail, Contacts, Calendars" and under Accounts select "Add Account". Choose "Other". Under Calendars, choose "Add Subscribed Calendar".
In the "Server" field, press and hold until the "Copy/Paste" menu appears and click on Paste. That will insert the unique url you just copied from GoToList. Click on "Next."
After iOS verifies the url, you will see the screen below.
Edit the "Description" field to a name that makes sense to you, usually the name of the GoToList list works best, as this will appear in the Calendar app.
Click on "Next" and the process will complete. Go to the Calendar app on your iOS device and see the GoToList calendar and all of its events listed.
You will need to repeat this process for each of your iOS devices independently.