Not sure what the WefWef interface looks like, but if it becomes a major problem the Jerboa interface has the ability to set your own font size up to some ridiculous number.
You can also adjust the colours, not just something like "dark mode vs light mode", but stuff like "red writing on grey background" etc. if that helps you see better
In iOS, open wefwef.app in Safari, adjust the text size there (The button to the left of where safari shows the domain name), then klick the share button and „Add to Home Screen“. The Text Size setting should persist in the Progressive Web App.