Universal Uclick is the company that holds the licenses for most of the comics in your daily newspaper -- the company was formed when the Universal Press Syndicate joined up with the Uclick media group. They've run a web archive of the company's comics for quite a while now, and today that content has arrived on the App Store in the form of the free GoComics app.
Just like the website, the app offers up daily archives of many, many different comics from the funny pages, and while you can sign in to an account and even sign up for a "GoComics Pro" membership (which kills the advertising and gives you some extras like an email digest), just browsing through the drawings is completely free. The app is quick and smooth, and because Universal's reach goes so far, there's never any shortage of new comics to read.
The one issue I have with the app is strictly mechanical -- when browsing through the comics on portrait mode, the UI will slide into the background as you're reading. On a timer, that seems to be exactly when I finish reading whatever strip is visible at that time. This would simply be an annoyance, except that when the UI does slide away, the ad in the app just happens to slide itself right into the spot where I normally would press to see the next comic. That may all sound complicated, but the end result is that the UI feels clunky, and it's extraordinarily easy to "accidentally" click an ad when I don't mean to. The same issue doesn't pop up in landscape mode, however, so I presume Uclick isn't just trying to sneakily sell more ads.
At any rate, that's a small concern with an otherwise excellent little app. If you like reading the comics, but don't always have access to a newspaper, the GoComics app is a great way to browse through the cartoons. It's available for free right now.