We have a lot of apps coming through our tipline, but this one caught my eye, not only because it is called Zombies (the stumbling undead always catch my eye), but because it offers up a bit of good old-fashioned fun in the form of a Daleks!-style remake.

Gameplay is simple and straighforward -- you run, turn-by-turn in eight directions, from zombies, who pursue you at the same speed, and though the game runs at any pace you want (perfect for gameplay on the iPhone, in my opinion, since most of the time I'm just looking for a few seconds to a couple minutes of easy-to-pick-up action), the dread is real. Just like actual zombies, these guys shamble their way toward you with a hunger that only brains can satisfy.

The game is on the App Store now [iTunes link]. I will say that it is a touch pricey at $2.99 (a simple arcade game like this seems made for the 99-cent price point, and it will probably end up there eventually), but who am I to begrudge the developers a couple of bucks? I don't need to drink that cup of Starbucks anyway. If you're in the mood for a simple, zombified twist on an old classic, this is it.

While you're at it, check out the Zombies preview video we shot at WWDC last July.

The French developers at Visuamobile make exceptionally well-designed apps. They sent me a promo code for GeoMaster [iTunes Link], and I wondered aloud how they would make geography attractive, both visually and as a game. Guess what? GeoMaster is pretty fun. If you know absolutely nothing about geography, then OK, this is like playing a strange guessing game. But I have to say it starts easily enough, so much so that you may be surprised what you DO know.

The game play is simple: countries, states or capitals appear on the screen, and you must point as close to them as possible on a map within a time limit. You can choose from US cities or states, countries by continent, world capitals or French departments. In the case of cities, accuracy earns extra points.

That's really about it, other than some high scores and an excellent amount of finish. This would make a good learning tool, I think, but it's also a fun casual game. Currently going for US$1.99 on the App Store, this is a good buy for parents and geography nerds, or anyone tired of the traditional puzzle games littering the space. Check out the gallery for shots of the game in action.

Many of us are forgetful in some form, and this trait is especially magnified when one proceeds to show others an "awesome photo" on your iPhone that, sadly, didn't get synced. Instead of telling your friends that you'll show or email them the photo later -- assuming you even remember to -- you can use Simplify Photo to view your entire iPhoto collection.

While increased megapixels in digital photography brings with it the promise of better picture quality, in most cases it comes at a file size premium. And because storage space on your iPhone is a finite resource, you can choose to set aside dedicated space for those really important photos and use Simplify Photo for those that are not as important but would nonetheless like to have access to just in case.

Simplify Photo is available for 99 cents on the iTunes App Store, while the required desktop client (available for Mac OS X, Windows, and Linux) is available as a free download at the Simplify Media site. The desktop app allows you to not only specify which iPhoto albums and events to sync, but the people as well -- via integration with the app's "Faces" facial detection feature. And if you're not exactly sure which album or event a photo is stored, you can use the app's search feature, which searches your photos' tags, titles and comments.

But the standout feature of Simplify Photo is its geolocation support. Like iPhoto '09's places feature, Simplify Photo displays a map with various dropped pins; and tapping on the pins will display the photos taken in the vicinity.

If a picture can say a thousand words, then Simplify Photo's desktop syncing capabilities have the potential to make your iPhone speechlessly filled with photos.

Catching up on the happenings around the blogosphere is a difficult task. Luckily, I happened to stumble upon John Burke's Download Squad piece on the release of Regator [iTunes link].

So, if you'd like to get caught up on the latest news, insights and commentary on Rod Blagojevich around the blogosphere (now that's a tongue twister), Regator could be of assistance.

Regator's user-interface is similar to USA Today's iPhone app [iTunes link]. A horizontal menu displays a number of categories -- such as sports, lifestyle, and entertainment -- that are touch-scrollable. Tapping on a category displays its subcategories. For instance, NBA news would fall under the basketball branch of the sports tree. While a breadcrumb trail displays your viewing hierarchy, the browsing menu disappears as you scroll down; this was my only annoyance with the app, although it's a relatively minor one.

Regator's stand-out feature is what it calls "trends." Like a tag cloud on a blog, in which bigger clouds are usually associated with more hot topics or issues, trends provides a listing of the latest hot topics around the blogosphere.

For instance, a look at sports trends shows Tiger Woods at the top of the list -- which is no surprise given Y.E. Yang's surprising victory over him this past weekend. And Brett Favre's retiring-unretiring-retiring-unretiring-retiring-unretiring puts him near the top of the trends list as well.

Regator is available as a free download at the iTunes app store. Domo arigato, Regator!

The Iconfactory's Twitter for iPhone client app, Twitterrific [iTunes link] , has been updated to 2.1. The new version has added several new features that make it far more useful than before. A few highlights:

• New "Load More..." button at the bottom of the timeline to retrieve older tweets
• New "Following" and "Followers" lists in author view
• Support for recording, posting, and viewing videos (recording and posting require iPhone 3GS)
• Built-in browser now supports landscape orientation
• Image links are now displayed in a photo viewer
• Long uploads now show a percentage completed
• Added in-app email support

The update comes with bug fixes as well, including improved typing speed, plugged memory leaks, and many more.

Twitterrific is the only Twitter client app I've used for my iPhone so far. The free version may be ad-supported, but even before this update its smooth interface and impressive functionality were enough for Twitterrific to make it to my iPhone's first page of apps. So far the update seems to run far smoother, and the added features, particularly "Load More..." and the Following/Followers lists, ensure that this will most likely remain my Twitter app of choice.

I don't have a 3GS, so I wasn't able to test the video upload feature in Twitterrific 2.1. Our own Dave Caolo used it on his 3GS to upload a ten-second film, and he said it took less than thirty seconds to upload it over 3G.

Oddly enough, even though the app has a built-in internet browser, it's still only rated 4+. Other apps have run into approval hurdles from Apple's app store requiring them to be rated 17+ because the built-in browser "could be used to link to objectionable content." Perhaps we're seeing the end of this practice?

Well, another day, another iPhone GPS app is released to the eager hordes. One of the latest entries is CoPilot Live [iTunes link]. Note: CoPilot Live is also available in a version for the U.K. at the App Store.

The North American version is a US$34.99 full featured nav for your car, bicycle, or just walking around. All the maps are built in, so it does not require any data, which is a plus.

There are things I like about this app, other than the low price. The screens look good, and are highly configurable. They give you the option of getting live weather at your current location, or your destination. I'd like to see that on every GPS app. Satellite acquisition was quick, with no glitches. Although some users have reported crashes, I found the app stable and reliable.

The voice instructions are very clear, and you have a choice of several languages with either a male or female speaker. In the U.S. the choices are 'John' or 'Lisa.'

You can zoom in or out of the 3D or 2D maps, and it appeared that as you approach a destination the map zooms in automatically. The app quickly switches to portrait or landscape mode, and you get a full screen, large type indication of the next turn. It pops up for a few moments, then returns to map view.

The app allows you to plan a trip in advance and preview the route. Happily, you can choose a destination from your address book.

Of course, things aren't all rosy with CoPilot Live. Here are the issues I saw in a couple hours of driving around town.

I have been a fan of 3D ever since I found a 3D horror comic book in an old flea market when I was a kid. The anaglyph red/blue glasses made the black and white comic images jump off the page. It really hooked me, and since then I've seen most all of the 3D movies made, ranging from The Creature From the Black Lagoon, to Kiss Me Kate, to Hitchcock's Dial M for Murder, in the early days, to the pretty darned amazing IMAX 3D Across the Sea of Time, the first one that really blew me away. With recent releases using the Real-D process, films are using 3D as a storytelling device instead of a gimmick - as evidenced in both Coraline and Up.

Now 3D is making a huge resurgence. It's hard to find a CGI animated film that's not in 3D. The market is getting ready to explode with live action 3D films from big name directors, like the upcoming Avatar, directed by James Cameron, and Tim Burton's Alice in Wonderland. Dreamworks states that all it's animated product will be in 3D from now on and Pixar is redoing the two Toy Story pictures for 3D before the release of Toy Story 3, also in 3D.

I spent many visits exploring the old Museum of Holography in lower New York City standing, amazed, in front of, and walking around seemingly impossible sights. I'm by nature a gimmick nut and holography is the most impressive visual manipulation I've ever come across. I was very excited to find the Holograms app by Mach Kobayashi. Even though the app's 3D effect is not actually holography, the demo video looked amazing and the results are impressive - but getting it to work is less easy.

Camera Genius [iTunes link] has updated its photo app to include zoom, compatibility with OS 3 and introduces a new user interface.

The app aims to be a kind of one-stop app and does give the user features not available in the built-in camera app. One of the nicest is a timer function. You can even set up the camera, and say 'cheese,' or anything else, to get a picture taken when you're not at the camera. Apple should have built this in but didn't.

Another nice plus are camera guides -- superimposed grid lines to help you frame and level your image. Other niceties include a review button to take a look at what you photographed, and a 'big button' that allows you to tap the screen anywhere to take a picture, and not have to find the small icon.

Camera Genius will also help you get a steady picture. If the feature is turned on, the app uses the motion sensor built into the iPhone to take the picture when the camera is steady. It's not a built-in stabilizer, but it will get you a better picture while it waits for your hand to stop shaking. Note: This feature is not of much use if your are trying to get a quick action shot.

There are a couple of things I don't like. The 'zoom' feature really just crops your photo. You are not zooming in, you are just enlarging your image, noise and all. I also noticed that if you are listening to your music collection on the iPhone and bring up Camera Genius, the music just stops. The developer told me he didn't know about that bug, and says it will get cleaned up quickly.

I also noticed that pictures you take through the app have no geotag data. That's going to be a big problem for a lot of users. Jeff McMorris at CodeGoo, which has produced the app, says geotag data should work in the next update.

I'd also like the settings screen to indicate which features are on and off, perhaps with a little check-mark or color cue. If you just look at the screen, you have no idea how things are set.

One of the things I really like in the app is the little camera manual that is built in. It's like a short, basic course on photography, with brief sections on things like lighting and composition. Serious photo hobbyists won't need it, but for people just getting started it is welcome information.

The app is on sale for US$0.99 which is a nice price for such a versatile addition to the iPhone. If the geotag issue is fixed, I think many people would see Camera Genius as a viable replacement for the built in camera app.

Here are some annotated pictures of Camera Genius in use:

Electronic Arts has released the Wolfenstein RPG for the iPhone and iPod touch -- the game is available on the App Store for $4.99 right now. It's based in the world of Wolfenstein, but it's not your normal first-person shooter. Instead, it's actually a mobile turn-based RPG, adapted from an older cellphone platform for Apple's handheld. Considering its origins, the game looks pretty good, and it's got a silly sense of humor as well -- you can read books to gain abilities and power-ups, or play a chicken-kicking minigame. Reviews are pretty excellent on iTunes, so if you're looking for something a little different to play as a role-playing game, it might be worth a look.

Even more anticipated than this game is the Doom RPG, with the same type of gameplay, but set in id software's Doom universe (notable, among other things, for its BFG weapon). Odds are that if this game does well, the Doom RPG (and maybe even Orcs and Elves, originally seen on the DS) probably won't be far behind.

In our discussions of radio apps for the iPhone we've briefly mentioned Stitcher, a great app for accessing a wide variety of audio programs on the go. In fact, Stitcher has been kind enough to add our TUAW Talkcast in the app and on their site (where you can stream via your browser). Stitcher is currently available for the iPhone and several of the latest BlackBerry models, although the Storm version is still pending. I've been using Stitcher 2 for a while, and if you're a news junkie, you will be pleased.

Check the gallery for a screen-by-screen analysis, but here are some winning points for Stitcher:

• A large library of podcasts. Why listen via Stitcher? Well, you can get them on the go and you don't have to download them.
• A library of headlines -- posts read aloud from sites like TechCrunch and Macworld. It might seem silly to some, but for commuters it's a great way to hear what your favorite sites are writing about.
• Even more content from people like NPR, MSNBC, Fox News, Slate, CNN, The Onion and many others.
• A "station" model like Pandora. The idea is to "stitch" together a station of the stuff you like. Maybe you like a little offbeat humor, a little financial news and then wind down with Engadget headlines. Stitcher can do that.
• Stitcher is also pretty good at recommending content, so it becomes a discovery tool (again, like Pandora). The pre-configured stations are excellent and grouped around content. One of note: Short Attention Span -- all shows are under 3 minutes.
• You can choose to enable an account with Stitcher, providing a connected experience from the web to your iPhone.
• The app itself has a history feature (handy and underrated), an excellent search function and a way to favorite stations.
• Since Stitcher has a web presence, you're also able to get alerts via email or SMS when fresh content arrives. You can set this for any station or broadcast.

Stitcher [iTunes link] is free, setting up an account is free, and all the content is free, so you won't lose anything by trying it out. While you do, be sure to check out the TUAW Talkcast on Stitcher and Engadget's headlines.

Massively has a good look at an iPhone app that's a must-have for players of the space-based multiplayer EVE Online -- Capsuleer 2.0 isn't an actual client, but like the desktop app EVEMon, it allows you to monitor and track your EVE pilots from outside the game. It's also got skill queues built in (unlike other MMOs, EVE allows you to have your pilots level even while you're away from the game, so most of the strategy in leveling actually comes in choosing the next skill to work towards), a skill library, more pilot details, and even a mini-RSS feeder, incorporating a few popular blogs from around the EVE blogosphere.

The two developers of the app tell Massively that their biggest issues in developing the app were mostly by way of the limits CCP (the company behind EVE Online) places on what third-party apps can do with their info.. Most of the things they can't do are built into the game itself, and so it makes sense that a certain amount of functionality can't leave the game client (or else people might never log into the game). The app is currently free in the App Store right now, and the devs aim to keep it that way, but just recently added ads to the mix from the game's official magazine to cover server costs and bandwidth.

Finally, they say they're excited about the possibilities with iPhone 3.0 -- notifications are mentioned, and of course it would be cool to get a popup reminder every time a pilot is about to hit a skill. They're also working on a way to provide stats about the ingame Faction Warfare. Sounds cool -- EVE Tracker is still another possibility if you want to follow your EVE progress on the iPhone, but it looks like Capsuleer adds even more innovation to the mix.