The key collectors comic app is a must have for any active collector. My family usually fingers through comic bins with one hand and search eBay and mycomicshop.com with the other.
Now we just open the app and find details such as first appearances and pricing guides instantly. My favorite feature is the “new keys out this week”. It’s free to download, we haven’t tried the upgraded subscription yet but out of the box this free version is awesome and truly a must have try it today.