Programmatically apply catalog price rules in Magento

apply-price-rules.php

<?php
ini_set('display_errors', '1');
error_reporting(E_ALL);

// Bootstrap Magento
require '../magento/app/Mage.php';
Mage::app('admin', 'store');

try{
  $catalogPriceRule = Mage::getModel('catalogrule/rule');
  $catalogPriceRule->applyAll();
} catch (Exception $e) {
  die($e);
}
// GLHF

Idea to add? Mage::app()->removeCache('catalog_rules_dirty');

Also. What store rally needs to be loaded I have seen Mage::app('admin', 'store'); and Mage::app('default');