The free 50GB that Zoolz offers is a 14 day trial.
From cloudrewards.net:
Zoolz offers a 14-day free trial with 50GB of regular storage and 100GB of cold storage so that you can thoroughly test it out.
Another browser I have checked.
AVG Secure Browser is up to date
Version 89.1.8954.116 (Official Build) (64-bit)
According to AVG this is a chrome based browser.