In addition to my review, I'd like to add that the app could REALLY use an exceptions option to hide apps of our choice from indicating updates are available.

Case in point: TT said there was an update for Quicktime 7. I thought it was odd that Apple didn't alert me of this update, so I tried to install it. As it turns out, that update was specifically for Leopard-only (I have Snow Leopard). Unfortunately, barring an exceptions list for updates, I will see this as an available update for all eternity. If Apple ever does provide an update for Snow Leopard, then I can get that via Apple's updater anyway.

Another example was persistent reminders of updates for apps from iLife '09, for example, even though I have iLife '08. If I had iLife '09, I could have actually utilized these updates. Since I haven't upgraded and not planning to, these updates are useless to me. I had the same problem with a game. I have the original Wingnuts game, but it insisted that Wingnuts 2 was an update for me. It's not... it's a new game.

I don't entirely fault the TechTracker app on this... it's just pulling the version info from the embedded plist in these apps. But an exceptions list will go a long way to addressing this.