I now have a Nostr client running, Pumpstr, that supports reading, replying and reposting. Let's see if pumps are still working (I will try to pump this post). If so, another nice set of features would be to display aggregated likes and reposts, in addition to pumps. Looks like many clients do not do this until a post is selected, so it may be a bit heavy on the relays for the "all posts" view. Time will show.