Is there an accessible Genealogy app for UK?

Hi
I wondered if anyone has tried a genealogy app and found it relatively accessible? Based in the UK, I've been looking at "Ancestry" and "Find my Past". I know that there will be plenty of old documents that I'll probably need sighted help with but I'm interested to find out how much accessibility these type of apps for visually impaired users have, For things like family tree building and looking at old census etc.
Is it worthwhile downloading on my phone or iPad?
Thank you