Does anybody know if Mega Jump is one of these free iPhone apps which downloads sensitive personal data from your iPhone?
Is there a site where all the apps are listed where privacy concerns have been reported?
One thing to note: just because a company is a either well-exposed, well-known or have lots of apps out in the Top 25 / 50 / x rankings, it doesn't mean that they don't release rogue / info farming apps.
In fact, developers who release info farming apps WILL want to have a big name within the App Store to get more people to download their malicious apps. One such case is highlighted in this article.
A Google search on GetSet games does not reveal any customers flagging them as scammers or info farmers.
A complete list of fradulent apps / app farms cannot be found (heck, it's probably impossible since you'd have to run through all the source code of all the popular apps in the App Store, lest ALL the apps), but here's a small list of such apps can be found here.
GetSet Games is a pretty big name on the Appstore, so it's safe to assume that they are a reputable company. I can tell you I've downloaded Mega Jump, and have never had any problems or concerns with it. I can't give you a source, but I'm positive that it's a secure app.