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Iphone4 forum app

Have you tried tapatalk? This last update has made it a bit buggy but it works pretty good!
It shows up on the iPhone version. Have you tried searching for "helifreak" (assuming the version you're using support search)? I had to do that the first time I used Tapatalk with HF.

I have some apps to try.
"If you are an iPhone 4 owner currently overwhelmed by the 100,000 plus Apple App Store, and wondering which app is really the best iPhone 4 app for keeping yourself entertained on the go or finding your way around town, we may be able to help. The following is our pick of the top 15 best free iPhone 4 apps. You can have a try with our iPhone 4 apps list and download the iPhone 4 apps for free via Apple Apps Store."
Top 15 best free iPhone 4 apps - Best iPhone 4 Apps Tutorial