RSS reader comparison: Zhou botong and greatnews

I have used 6 or 7 readers and recently used greatnews. But I found that it is slow to switch channels. My machine has MB of memory and I even want to expand the memory. Today, I downloaded Zhou botong reader again. I'm glad that it switched the channel quite fast and has the function of searching all channels. However, it seems that there is not enough research on user needs, I remember that KESO gave suggestions on ease of use very early. Unfortunately, there was still no improvement.

The following features are missing:

Mark all channels as read
Mark a channel as read
Mark channels with unread content
Return to the previous reading channel.

I feel that these are easy to implement, and they are also quite necessary. I don't know how to pay attention to them. It was also unpleasant to register at their forum. After half a day, I was told about system maintenance. Why didn't I say that?

The general feeling is that Zhou botong is still good and requires more effort in ease of use.