@feditips
I first used the official Mastodon app, but it didn't show alt-text. Complete no-go. So I tried Metatext and ended up using Toot!, although I found all the animations rather distracting and would have liked to turn them off. Took a lot of fiddling with themes, too, until I liked it.

Now I found that Mastodon is updated and finally shows alt-text, so I am very happy to be able to return to it. I feel it has everything I need.

Best option is still the website version on my laptop :-)