What security measures will you have in place with Google?
For starters you would need a private spreadsheet and a secure method for your app to access this private spreadsheet. Will a user only access their own data ?
Also have you considered google's quotas on a private google account for that level of users ?
What security measures would you have on the app?
No secure data on the app at all?
You say it is for children, your privacy actions and policy will need to be extra tight.
never store a password in plain text in any database... always store its hash value and if you want to compare the entered password with the stored password just compare the hash values...
There is a fundamental difference between Hashing and Encryption algorithms, see this stackoverflow answer: Hashing is one way. You can not get your data/string from a hash code. Encryption is 2 way - you can decrypt again the encrypted string if you have the key with you.
Of course I dodn't know about the issues regarding security. Just discovered about hashcode possibility, it's new to. I will see how it works.
The app is just a quiz for students.
All I wanted that each Student have his own
ID to login mainly to record their performance scores so they know where they stand on a subject. Just storing name, password and scores.
Scalability - I was thinking if students like it and more students start using I would move to firebase at that stage.
But, yes I am going to stick with firebase. It's better and created for the purpose.