Sex, including solo sex, certainly has its supposed health benefits, from keeping your vagina healthy and happy , to sleeping better at night. Jessica has been counselling couples and individuals about the pros and cons of no-strings sex for more than 20 years. We asked for her advice on using sex apps. Before you start downloading apps, you need to be sure that fun between the sheets with someone you may never see again is right for you. And even regular sex, without commitment, could also lead you to feeling hurt in the future.