If you want a detailed answer, please read the news item
“How tickers works … or why
tickers is not a RSS/feed reader”
. Here’s the short story: In tickers, RSS feeds are
processed on our servers and new items are sent to you as notification and to your
personal liveticker. Therefore, tickers is blazing fast, lowers the data usage a lot,
increases battery lifetime and you get the information in realtime on your smartphone.
Feed readers, on the other hand, download all the feeds locally, when you start them
(some hide this by doing this in the background, even when the app is not running).
This takes time, power and bandwidth to crawl all the feeds.