https://www.amazon.com/Internet-First-Discovery-Jean-Phillipe-Chabot/dp/0439148243

I'm not the original poster, but as someone who used Apollo on an iPhone for years, it has the same look/feel of Apollo and is (generally) pretty snappy. Admittedly, I haven't tried many other apps/PWAs for comparison, but I find wefwef to be easy to use, easy to switch between accounts when necessary, and it has the same Apollo-ish interface I've gotten used to over time.