Salesforce Lightning view Counter Component which can be added to a Record Page to count the views on that record. The sObject needs the custom field "View_Count__c" as Number(18, 0).

ViewCounter.cmp.html

<aura:component implements="flexipage:availableForRecordHome,force:hasRecordId" access="global">
	<aura:attribute name="toUpdate" type="Object" 
	  description="The record object to be displayed"/>
	<aura:attribute name="toUpdateRecord" type="Object" 
	  description="A simplified view record object to be displayed"/>
	<aura:attribute name="recordSaveError" type="String" 
	  description="An error message bound to force:recordData"/>
    <aura:attribute name="viewCounted" type="Boolean" default="false"  
	  description="Was the current view already added to the view Count?"/>
    
    <force:recordData aura:id="toCountRec" 
        layoutType="FULL" 
		recordId="{!v.recordId}"  
		targetError="{!v.recordSaveError}"
		targetRecord="{!v.toUpdate}"
		targetFields="{!v.toUpdateRecord}"
		mode="EDIT"
		 recordUpdated="{!c.recordUpdated}"/>
</aura:component>

ViewCounter.design

<design:component label="Lightning View Counter">
</design:component>

ViewCounter.svg

ViewCounterController.js

({
    savetoUpdate : function(component, event, helper) {
		component.find("toCountRec").saveRecord($A.getCallback(function(saveResult) {
            if (saveResult.state === "SUCCESS" || saveResult.state === "DRAFT") {
                console.log("Save completed successfully.");
            } else if (saveResult.state === "INCOMPLETE") {
                component.set("v.recordSaveError","User is offline, device doesn't support drafts.");
            } else if (saveResult.state === "ERROR") { 
                var errMsg = "";
                // saveResult.error is an array of errors, 
                // so collect all errors into one message
                for (var i = 0; i < saveResult.error.length; i++) {
                    errMsg += saveResult.error[i].message + "\n";
                }
                component.set("v.recordSaveError", errMsg);
                
            } else {
                component.set("v.recordSaveError",'Unknown problem, state: ' + saveResult.state + ', error: ' + 
			      JSON.stringify(saveResult.error));
            }
        }));
	},
    
	recordUpdated : function(component, event, helper) {
		var changeType = event.getParams().changeType;
		if (changeType === "CHANGED") {
            component.find("toCountRec").reloadRecord();
    	}  else if (changeType === "LOADED") { 
        	let count = component.get('v.toUpdateRecord.View_Count__c');
            component.set('v.toUpdateRecord.View_Count__c', count + 1);
            if ( !component.get('v.viewCounted') ) {
                component.set('v.viewCounted', true);
                var a = component.get('c.savetoUpdate');
                $A.enqueueAction(a);
            }
        }
    }
})