Augmented reality applications to this point could be best categorized as tantalizing to the mind, but otherwise pointless. Thankfully, it seems as if that's no longer the case. AcrossAir, a nascent app builder for the iPhone, has conjured up a slickly executed digital guidance application that augments video with real-time distance and directions to the nearest subway station. With the iPhone 3GS pimping an improved camera, inbuilt compass and GPS, we had a hunch that it wouldn't be long before someone slammed them all together and gave commuters and tourists alike a reason to smile. Presently only capable of serving up directions in London, this app should find plenty of user interest that will hopefully drive its development for other metropolises around the world. Click through to check it out for yourself, and expect to see it ready for download as soon as someone (or something) at Cupertino decides to start approving live video programs. Any day now, Apple...

[Via Tokyo-Genki]

We're pretty big fans of AT&T's U-verse (though, alas, we're not lucky enough to live in an area where we can have it!), and we sort of figured a few days back when the company rolled out some new tweaks to its Total Home DVR that something like this might be on the horizon, and here it is. AT&T's rolled out a free app for the iPhone app store that allows users to access the entire program guide, search for specific shows, and schedule, manage and delete programs and settings. The Mobile Remote Access App -- as it's not-so-creatively called -- sounds like a real winner for those with both U-Verse service and an iPhone... but then, we still communicate primarily with quills and parchment, so what would we know? One more screenshot of the app (plus a video!) after the break.

According to Dieter over at PreCentral, real, honest-to-goodness usable apps are starting to "trickle out" for the Pre / webOS. Apparently utilizing a loophole in the operating system which allows unsigned apps to be sideloaded through email, homebrewers have taken to the interwebs with small utilities like the tip calculator (pictured above). This comes just a day after a group of DIY'ers figured out a workable solution for getting software onto the phone without rooting, so obviously Pre hacking is moving along at a healthy clip. These are -- of course -- very early applications, so don't expect perfection, and there seems to be some concern that Palm might want to patch up this hole, as it leaves the phone vulnerable to less altruistic endeavors. While the latter point is reasonable to consider, we do have a piece of advice for the folks at the front of this movement: don't wait and worry on how Palm will react to this stuff. It's important to push platforms like webOS, and the Pre needs all the love it can get on the development side right now.

Read - Right now: Install a Homebrew App without Hacking
Read - Homebrew Apps Tricking Out, but be careful

If you're on an iPhone right now and you see this picture here, you probably have an overwhelming feeling of doom in the pit of your stomach right about now -- or at least you should. Our tipster noticed that this message appeared while redownloading Google Mobile -- not the end of the world, since Google Mobile is free and all, but it's a strong hint that Apple will at least be giving devs the option of charging every time their app is redownloaded over the air, even to the same device from the same iTunes account. We've seen the message ourselves, only with free apps so far, but it's definitely something that could end up making the ownership experience a little more expensive in the future. Good thing for the 32GB iPhone 3G S, we guess, where you'll never have to delete a single app in your life if you don't want to -- but regardless, it's extraordinarily lame move on Apple's part if it ends up staying in there.

When we were breaking down the meaty differences between the old-school 3G and the 3G S yesterday, we made an assumption about support for OpenGL ES 2.0 3D graphics APIs in the original iPhone 3G based on the fact that it had been available in the iPhone OS 3.0 SDK for several betas. Turns out, though, that the graphics processor in the 3G S -- the PowerVR SGX -- supports hardware acceleration of both OpenGL ES 1.1 and 2.0 while the more pedestrian PowerVR MBX found in the iPhone 3G supports 1.1 alone.

What does this mean to you? OpenGL ES is the lightweight version of OpenGL, a powerful library of real-time 3D rendering APIs; many modern phones and other handheld devices support the older 1.1 specification, but 2.0 is less common -- it kicks things up a notch by supporting more complex textures and shading operations, which basically means games written to support it look more badass. Here's the problem, though: because OpenGL ES 1.1 and 2.0 are completely incompatible with each other, apps need to be written to support both if they're going to be maximally compatible. A 2.0-only app can't simply run on a 1.1-only device and not look as good -- it won't work at all.

Here's where it gets interesting. The App Store has already splintered a bit with certain applications being unavailable to iPod Touch users (dialers, for example), but language in Apple's iPhone SDK documentation leads us to believe that the company eventually intends to begin allowing it to splinter even among iPhone models, maybe as soon as the 3G S is released. That is, they'll allow apps that are only compatible with the 3G S because they're written to take advantage of OpenGL ES 2.0 and don't offer a 1.1 fallback:

"When designing your OpenGL ES application, the first question you must answer is whether your application will support OpenGL ES 1.1, OpenGL ES 2.0, or both... Your application should target OpenGL ES 1.1 if you want to support all iPhones and iPod touches."

Realistically, it was bound to happen; platform aside, hardware is always improving, and it's paralyzingly difficult to require that all apps be compatible with all of a platform's devices regardless of age -- particularly when it comes to gaming. We imagine this'll be an issue with apps taking advantage of the 3G S' other specific features like the magnetic compass and video recording support, too. Question is, what'll be that must-have game (or compass, we suppose) that spurs stubborn 3G owners into shelling out a few hundred bucks they didn't intend to?

It looks like Sony Ericsson is taking a page out of Apple's book for the launch of its app store, bundling the service in with the very same platform it already uses to distribute music and movies. PlayNow arena -- which was originally designed for music distribution and whose movie rental functionality is going live this month in a handful of locales -- is now being expanded to incorporate applications as well, initially coming to 13 countries and some 38 Sony Ericsson models. Conveniently, PlayNow arena is already well-plumbed to support a variety of blling methods which should make the transition to paid apps a pretty seamless one for the company, devs, and users alike. Submissions from developers for inclusion in the store will kick off July 1, initially covering Java and Symbian before being expanded to cover "additional platforms" (Android, anyone?) later in the year; there's no word, though, on exactly when end users will be able to get in on the action.

We can't believe it's taken this long for an app to do this, but Phase2 Media's Email'n'Walk app overlays an email composition window over live video from your iPhone's camera, allowing you to pound out messages while avoiding sidewalk-hogging obstacles. We just wish it didn't rely on the actual Mail app for sending and it'd be nice if it handled SMS as well, but obviously Apple's not going to let that happen. Free in the App Store for now.

[Thanks, Becky; warning: iTunes read link]

BlackBerry users know that stellar Twitter clients have been hard to come by, so whenever a major new release hits the streets, it's something that makes the BlackBerry-carrying Twitter addicts out there -- and there are many of them, rest assured -- sit up and take notice. The latest app is called TweetGenius, and if you've been keeping an eye on our Twitter accounts, you'd know that we've been pretty excited about this app since we first had the opportunity to check it out over a month ago. In that short period of time, it's gone through one hell of a metamorphosis, and it looks like the bar is being raised for future apps -- Twitter and non-Twitter alike -- on the BlackBerry front. Read on for a closer look at what makes this app tick -- and more importantly, to find out whether it'll be replacing your current Twitter client.

Manufacturers' app stores have been getting most of the attention lately, but let's not forget that carriers have massive content decks of their own -- content decks that carrier-branded feature phone owners in particular are exposed to almost every time they open their browsers. Carriers like T-Mobile have been making overtures toward developers big and small lately in an effort to make those content decks more accessible, and AT&T's taking a big step with the introduction of its Apps Beta program. The idea's simple: devs can submit apps to AT&T and very quickly get approval to appear in the Apps Beta portal, which is specially designed to make it easy for customers to try software and give feedback to publishers. AT&T monitors the feedback, which it in turn uses (in part) to decide which apps makes the magical journey over to the main, non-beta content deck. The carrier will be actively marketing the program to subscribers in the coming weeks, but signup is available now if you like to live on the bleeding edge (and we know you do).

According to folks over at Android Community, Google has begun to pull tethering applications from the G1's Market. One of the contributors to the "WiFi Tether for Root Users" app claims that the company is citing distribution agreements with carriers as the cause of the takedowns. In their words:

Google enters into distribution agreements with device manufacturers and Authorized Carriers to place the Market software client application for the Market on Devices. These distribution agreements may require the involuntary removal of Products in violation of the Device manufacturer's or Authorized Carrier's terms of service" Google Developer Distribution Agreement

Of course, this should come as quite a surprise, given statements T-Mobile's Cole Brodman made to us during the G1 launch last year, and Google's seemingly rampant interest in being the de facto open source mobile OS. It's not clear at this point if this is an isolated incident (possibly related to the root nature of the app), or just the beginning of a more widespread move. Google (and T-Mobile to some extent) -- we await your response.

[Thanks, Chris]

You may have seen some reports today about a new app from Ripdev called InstallerApp, which some people have mistakenly been covering as a desktop client that lets you install Cydia and Installer apps without having to jailbreak your iPhone using something like PwnageTool. Just to set the record straight, here's the deal: InstallerApp is a kind of jailbreaking tool (let's call it "jailbreaking lite") coupled with a separate application management client for your computer. From what we can tell, the first thing it does is jailbreak your device (or, if you're already jailbroken, installs some additional software so it can talk to your phone). In no way is it allowing you to install non-Apple-approved apps onto a non-jailbroken phone: it's tweaking your underlying system to allow for those apps to run, and giving you an iTunes replacement to add and delete programs on your device. Keep in mind, RipDev is charging $7 for this, which isn't a bundle, but not free either... unlike PwnageTool and QuickPwn, which essentially do the same thing (minus the desktop client). We're not saying it's not a useful app -- it might be to some -- it just isn't the "get into jail free" solution that you may have heard it is. And now you know... which is half the battle.