What is the difference between a blocked savings account and the other sight deposit accounts offered to young people by Spuerkeess?

The Tweenz and Axxess sight deposit accounts are intended for customers who, at any time, wish to save on their own behalf and have their funds at disposal. They have access to these funds starting from their 15^th birthday.

A blocked savings account is frozen until they turn 18, but offers the best interest rate among all of Spuerkeess's sight deposit accounts for young people.