This extension will work on all the flash sales. We can’t compare the success rate because if people 10 million people try to buy the mobile then only 10k people can actually get it. So using this extension will automatically increase your chances. Just note that normal user can click 1 time in a second but with extension background script it can click more than 10 times. I recommend you to try it out yourself in the tomorrow’s Poco F1 flash sale.