Is this app really dangerous to have on my iPhone? (need smart ppl who know proxies)

[nnacrumors]

I stumbled across an app in the App Store that says it will block all advertisements from your iPhone while on WiFi.

To do this it basically has you go into your WiFi settings and set up a proxy.

My question is:
- Is this dangerous to have on my iPhone?
- How do I know that my data (passwords, emails, imessages) isn't being logged or stolen?

Here is some FAQ answers. But I don't know anything about proxies and still unsure regarding the safety of it which is why I am asking any experts here at macrumors

Is my connection still secure? Is my traffic sent through your proxy server?
*blank* does not affect the security of your connections in any way. We also do not act as a proxy server for your traffic. Every time *blank* blocks some content, it’s because your device will try to get it through a dummy proxy server. That’s how the blocking works.

What do you mean by "dummy proxy"?
Every time *blank* blocks some content, it's because your device tries to get it through a proxy server, which is not able to handle this a connection. That's what we call the dummy proxy. By default *blank* uses IP of 8.8.8.8 and port 53. This IP actually belongs to multiple DNS servers worldwide, which are operated by Google. We've decided to use this particular IP for several reasons: 1. iOS requires the dummy proxy to be a valid IP address accepting connections (so it's not possible to use local IP address of your device, since there is no open port to connect to). 2. It's really responsive, fast and stable anywhere in the world. 3. It's NOT ABLE to handle HTTP/HTTPS traffic and it immediately closes the connection (perfect!). 4. It's widely recognised and well known IP, so you don't have to be concerned about your privacy. We're really sure Google is not logging all web connection attempts made while blocking content from your device, since this dummy proxy is actually a DNS server supporting very different protocol. If for some reason you would like to use different dummy proxy, please go to Setup -> Settings to set your custom dummy proxy for blocking content. Please notice, that using a proxy which does not accept incoming connections may result in content blocking failures.

Thanks for your help guys, sorry I'm not as smart to know this stuff

 

[Shockwave78]

Turn off Java in Safari and that will get rid of most ads and speed up web browsing a ton. A few menus will be broken on sites but the trade off is well worth it imo

 

[Rigby]

Why don't you just write that you are talking about "Weblock"?

What this app (and several other similar ones) does is install a custom proxy-configuration script locally on your iPhone that redirects requests for web pages that you want blocked to a dummy address. This app uses the address of the public Google DNS servers. Note that the traffic does not actually go through a proxy, so it will not be tracked.

IMO it's a pretty clumsy but harmless method. Your web traffic will not be logged or intercepted.