I am working with Government of India and considering using Discourse for civic discussion and open governance in a rural district in India. Discourse as a website is NOT good enough. Moreover, the Android app that was linked a couple of times above, is NOT available anymore.
Villagers in India whose only network access is their 100$ smartphone, do NOT have or do NOT understand e-mail. They understand signing up using their phone number, which isn't easy to enable in a Discourse install. When Discourse sends notifications on email, it will open their E-mail app, not the Discourse app, causing further friction. Adding a website to homescreen is also something has some friction and therefore not many people do that, even though it is supposed to be easy. These users are also very price-sensitive and would want to minimize data usage for this app, but for now, I am assuming that Discourse website already handles it well using caching.
So, a Discourse app, even based on webview, would be amazing.