Remembering number of passwords strain our brain. That’s why people use same passwords again and again for all the online services. Now onwards no need to remember all those passwords.
Here is a great android app to store all the passwords. The app protects your password vault with a master password.
There are paid apps like LastPass available as paid services for the mobile users, but the one I demonstrated in this video is completely free. It stores all the data on your mobile in an encrypted form. So you no need to worry about loosing data.