[Samuel_Michon]

The way iOS handles multitasking is very similar to how Android does it. Why would it be good enough for your Nexus One, but not for an iPhone?

http://www.pcworld.com/article/199891/geek_101_android_and_i...

http://www.pcworld.com/article/199830/apple_ios_4_vs_android...

[joaquin_win]

So you think it's a problem on how specific apps are coded? (please see my comment above).

[Samuel_Michon]

I've never used Colloquy, so I can't judge its quality. According to its product page, it supports multitasking.

On my iPhone 4 and iPad, I can switch back and forth between my frequently used apps (NetNewsWire, Instapaper, GoodReader, Evernote, Omnifocus, Elements) and they rarely have to relaunch. When I return to an app, everything is how I left it.