I use Reeder 5 APP on all my devices, and I found for self-hosted RSS service, Google Reader API has more functionality than Fever API, like u can add/remove subscriptions or manage folders right in app, maybe it’s more convenient than on the web. So is there a Google Reader API support in the future?
tt-rss has a native api, there are no plans to support anything else out of the box. any other api could be implemented as a plugin.