Hi

I have a custom object with a master detail relationship to the Contact object. 

I would like to have, on the custom object's record detail page, a list of all other records for that custom object's record that are related to the linked contact. 
Like a related list, but for records on the same object, not a child object.

I found a way to show a related list for another object linked to the contact, but not on the same object
<apex:page standardcontroller="app__c">
<apex:relatedList subject="{!app__c.Contact__c}" list="apps"/>
</apex:page>

Org is still in Classic

Hi

I have a custom object with a master detail relationship to the Contact object. 

I would like to have, on the custom object's record detail page, a list of all other records for that custom object's record that are related to the linked contact. 
Like a related list, but for records on the same object, not a child object.

I found a way to show a related list for another object linked to the contact, but not on the same object
<apex:page standardcontroller="app__c">
<apex:relatedList subject="{!app__c.Contact__c}" list="apps"/>
</apex:page>

Org is still in Classic