This is definitely a good thing. Support the developers. It takes a lot of time and effort to build an app. Surely a single dollar (usually) is not too much to pay. Im' still surprised how cheap most apps are for my phone ;o
Would the iOS price suddenly not be "ridiculous" if they charged $25 for the Android version too?
When compared to $0.99 games it seems expensive, but let's be realistic. It's good quality software, and on a desktop it would be worth that price. The difference is that it's 100x more convenient on iOS since it's always with me.
In a perfect world Apple would allow a trial mode for apps which would enable all features for X hours or X uses. But that's just Apple. It'll never happen. I heard though that MS does something like this for its apps? Or is it only for games?