First up, Google Maps.
I've been playing with this app for the last hour, and I have to say that it's pretty nice. Animations are smooth, most settings are easy to find, and the voice navigation works well. One really cool feature: when using Street View at a particular location, tap the little double-arrow icon at the bottom left, and you can move the phone around to pan the camera on-screen, augmented reality-style.
One setting I disabled immediately was the 'Shake to Send Feedback' option. I won't be sending feedback to Google about incorrect map data enough for this setting to be useful, and in fact might be a hindrance if triggered accidentally. Also, when I first opened the app, I had the option to uncheck a tiny box that sends data to Google automatically. It's got to be one of the most difficult checkboxes I've ever attempted to tap.
In the end, I don't have any real reason to switch back from Apple Maps, but very nice work by Google here. Also, it seems that this app is only available for iPhone, no iPad version yet? Odd.
Developer Agile Bits has released an entirely new version of their popular password generator/storage app. Everything has been redesigned from the ground up, and it looks great. Kinda reminds me of a Tapbots app, really (which is a good thing). The new icon is especially lovely. Currently on sale for $8, over 50% off from the normal price.
If you're at all concerned about password security, or if you're the type to use the same password for everything, you should get this app. You'll wonder how you lived without it before.
If you want a super-detailed review, Macstories has you covered.
Kind of a crazy day, what with these two apps plus Flickr's wonderful update earlier.