No need for email or phone number or any personal info to create an account, you just need to enter any username and any password and pincode of four-numbers.
No one will see your data except you. your data will be saved in front-end in your side not in the server, that means you have to save your data in a private file each time you enter or exit the app, and if you don't save it you will lose your data.
Please note that you can't change the username or the password or the pincode after you enter.
Search for a random person or group, and your data and everything will be secret and no one will see or save your data except you.
You can search for anyone by their id, and everyone can use your id to search for you.
you can't change your Id after you login.