We also have a long-time app that recently (within the past 1-2 weeks) completely disappeared from the app store rankings. It used to always be in the top 20 o

We also have a long-time app that recently (within the past 1-2 weeks) completely disappeared from the app store rankings. It used to always be in the top 20 or so of its category, but now it's not ranked at all on the iPad app store. I'm not sure what my actual app ranking is now, but it doesn't show in the top 150 anymore. Like your app, mine can still be found when searching by keyword. On the iPhone app store, my app is still ranked, but lower than it usually is. My sales haven't changed too much, since I think most find my app through keyword searches, so I don't think a drop in sales is what caused the drop in rank. I was thinking it was a glitch/bug in their algorithm or possibly iPad device sales are so low now that hardly anyone is buying apps of my genre? But it's still really strange that with similar sales, my ranking has completely dropped off the charts like it has on the iPad app store.