Not all apps do. And that can't work in every case. What do you do with text in UI or sub-section of an app with a small paragraph of text, or a situation like the one just linked? you seriously think it's a viable solution to let users zoom in or out as they feel it's right?
I prefer an app displaying well at launch, i don't want to play with zoom factor.
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Seriously? that's your answer?
... just learn to read, ok?
If you can bear the 19% smaller size on the mini, then why don't you expect to see it 19% smaller also on the retina iPad 9.7". Not really maximized on it.
I can read fine.
But your example shows some text sometimes would need to be enlarged: they can't appear smaller than on an iPhone, the mini is held at least as close (same ppi) as an iPhone if not farther (because larger).
To gain comfort on the mini, then two solutions:
- tweaks on the mini only -> devs don't want to deal with fragmentation, or then, why Apple even stayed at 1024x768 with the mini if they wanted devs to adapt their UIs to each iPad sizes.
- tweaks affect all iPads -> text enlarged appears at a better size on the mini, but then even larger on the 9.7" than originally, and then less text can be displayed. Loss in quantity of data displayed on all iPad models in the end.
The problem is, you want it to display well for YOU. If app developers get in this game of resizing their apps for use on the Mini, what standard are they following? Apple hasn't set one, so it's a ripe opportunity for each developer to optimize their app according to their own preferences, which will lead to a mess of inconsistency. Especially because many of the problems they are 'fixing' today will be rendered moot when the Mini eventually gets a retina screen.