Do I need to register for an account to use smash. patrick.kusumura 2021年05月19日 04:30 更新 To use smash. you need to register an account. You can use your Apple account or Google account for account registration. 関連記事 How do I cancel my membership? Is smash. free to use? I forgot my account/password. How do I make an inquiry? Is there a follow or friend feature for specific people?