Mostly NetSurf, and for damned Web2.0 I use firejailed Firefox with heavily cleaned everything with url in about:config with uBlock.
Also you can set those apps up in a sandbox environment and use them.
The main problem is not that apps can do something on your computer. Problem is with using that proprietary service.
Or on a phone you can set your phone to have multiple profiles and use them completely separate from your important data.
If your phone runs IOS or Android - you are already doomed, It is not about important data, you could even run a VM with clean Android without any data and install only that app, but the point is that using that app you support that service and pay with your privacy, contacts, data and everything for it. Even if you never send anything except short text messages, that is your friends and contacts who will provide your photos, your details and nearly everything about you and BigBrother easily connect all that info to you by your phone number and contact list. Problem is in participation, not in an application.
Mostly NetSurf, and for damned Web2.0 I use firejailed Firefox with heavily cleaned everything with url in about:config with uBlock.
The main problem is not that apps can do something on your computer. Problem is with using that proprietary service.
If your phone runs IOS or Android - you are already doomed, It is not about important data, you could even run a VM with clean Android without any data and install only that app, but the point is that using that app you support that service and pay with your privacy, contacts, data and everything for it. Even if you never send anything except short text messages, that is your friends and contacts who will provide your photos, your details and nearly everything about you and BigBrother easily connect all that info to you by your phone number and contact list. Problem is in participation, not in an application.