88.io Web App is based on PWA technology, it allows us to break free from traditional app stores, but with freedom comes responsibility. Security is one such responsibility which must be taken very seriously.
In order to prevent exposing private content to servers, end to end encryption is used extensively. They have been concerns about security of doing so in a web app:
We believe managing the risk of having web app perform the encryption is still MUCH safer than letting the servers do so and give us much more flexibility to innovate than writing mobile apps.