My parents got this tablet for free and love it (especially for vacations and thunderstorm duty with our dog). My dad asked me to put a local weather app on it so he can track storms. When I try to do so, I get "insufficient space". There is a total of 4GB free on the tablet (out of 8GB). I know there is 3.12GB of space taken up for books, but what I'm wondering is why I'm getting that error. I have the same weather app on my phone and I know it's a LOT smaller than 4GB. What can I do to fix this? I'm not allowed to root the device or anything. Any help would be greatly appreciated. Thank you.