Software bundles seem to be all the rage nowadays, but in my humble opinion, MacHeist is still the best. It doesn't just lump a bunch of apps together for special price, but instead, it turns getting a discount into a game.

As a recent Mac switcher, I was utterly confused by MacHeist 3, the first edition in which I participated. Someone told me to check out the MacHeist bundle, so I went to the web site to see what applications it contained. But the site didn't tell me. It soon became clear that I was going to have to work for my software!

The whole idea, if you're not familiar with MacHeist, is that you need to complete a series of challenges, labeled "heists," in order to get free software. Yes, free. As in what lunches aren't. And the software isn't anything to sneeze at (neither are lunches, by the way), as there are always some real gems to be found.

UPDATE: We took the 4 from the title as it is currently unknown whether this is actually MacHeist 4 or an early bundle offer.

It was just yesterday that Apple announced they would allow free apps to enable in-app purchases, and developers are already jumping on the "get the app for free, buy the content later" business model as quickly as they can. ngmoco came out swinging, as Touch Arcade reports, with both a free intro version of Rolando 2 out for purchase, with later chapters of the game as add-ons. They've also been working on a shooter called Eliminate, and we're now told that title will be free as well, with extra content to buy later.

The creators of Urban Rivals, an app that is based on a virtual trading card game, have let us know that they too plan to go the free-with-microtransactions model as soon as their app is released, and though we haven't actually heard from Tapulous, Andrew Lacy told us outright that the only reason Tap Tap Revenge 3 had a 99 cent price tag on it was because of Apple's limitation, so we'll expect that app to go free as soon as it can.

Clearly, there's a drive for this model on the developer side, but the question will be just how much this echoes with consumers -- certainly the "download a trial, buy more later" model has worked well on other platforms, so we can expect it to work here on the App Store as well. But on the other hand, just as when the App Store first opened for business, it's a very "wild west" moment -- everybody and their brother is offering up in-app transactions, and they're all of varying prices and quality.

My guess is that we'll see a few "hits" -- a few free apps that everybody buys content for (Tap Tap Revenge 3 is a good guess; considering that because you know most of those songs, there's much less guessing on what the quality of the transactions will give you). At the same time, there will likely be apps that everyone agrees aren't worth the in-app purchase (it's the old story of "horse armor" when Xbox Live started doing microtransactions). Until we find a good balance, where quality meets price, odds are that it'll be tough for consumers to know just what's worth it, and thus tough for developers to convince them that their content is.

I only follow a few sports teams, but for the teams I do follow, Sportacular (that's the iTunes link for the free version, and here's the paid version, sans ads) is definitely my app of choice. For nearly every professional sport you can think of, the app will track scores, plays, schedules, standings, and anything else you need to know about everything from NFL to college football to the English Premier League and the PGA.

Right after iPhone OS 3.0 came out, the developer added in push notifications, and now I've got push updates coming whenever the Cubs have a game starting and ending (or at least, when they did -- there's always next year) and whenever a Bears quarter ends. Sportacular even has a few social features happening -- you can make picks and discuss each game with other fans using your Facebook login, as well as read news and updates about each team in the games you check out.

The app was updated to version 1.6 last night, and the new features include better game pages for NFL and NCAA football, and option to manage and track your fantasy football team in conjunction with their fantasy football app on Facebook. The one bummer I have is that they don't have actual media of the games -- for that, you'll probably have to go for an official app. But especially as a free download (the ads are definitely non-intrusive), Sportacular is really impressive with everything it does to help you track your favorite sports and teams.

If you look under your seats, you'll find a bevy of free iPhone apps. That's right ... you get an app, you get an app, everybody gets an app (or 16)!

We've mentioned Chilli X a few times, and I've developed a fondness for their collection of sleek, simple iPhone apps with great-looking interfaces. And now it's their first birthday, and they're giving out presents: this weekend only (starting right now), you can grab any (or all) of Chilli X's iPhone apps for FREE.

There are plenty to choose from; 16 apps in the App Store and one just submitted for approval today. We've mentioned Done [iTunes link], MyCal [iTunes link] and Playlist Alarm Clock [iTunes link], but much has happened since then. What follows is a roundup of some of the latest apps, but you can find them all by searching for "Chilli X" in the App Store.

Yeah, like everyone else, iTunes has fan page on Facebook. If you can stomach the process, you can even get 20 songs for free by becoming a fan. The process is a bit clunky, however, which seems to be par for the course on Facebook. First, you become a fan. Then, you'll need to allow the "Free On iTunes" app to get access to your profile (typical of a Facebook app, of course). Then, you click a link that says "redeem now" -- a link which took me to a blank page.

After digging back into the fan page again, I found that button again, and clicked it again. This time I got the right page, but iTunes never woke up (that is, the store link didn't work). Then I tried yet again to "redeem now" and voila! A page warning that I'd already done all this appeared. Luckily there was a redemption code on this page, and the "redeem now" button finally worked. I am now downloading iTunes 9, iPhone OS 3.1 and 20 songs by indie artists.

If you can suffer the mess that is Facebook, you can get some free tunes.

The floodgate of new iPhone apps is open and enlarging all the time. Hundreds of new entries hit the App Store every week. This is a wonderful thing, but it does cause a good deal of consternation.

If you are an iPhone owner, how can you keep up with what's out there? After all, according to Macworld, there are now nearly 500 fart apps available for your pleasure out of the 65,000 (and climbing) apps in the store. Cutting through the static is nearly impossible.

If you are a developer, how can you get the word out about your wonderful new creation? Well, there are number of ways, and since you're reading TUAW, you found one. We get many more app review requests than we can ever handle and I'm sure all the Mac and iPhone oriented sites are in the same position. Regardless of the quality of your new baby, it's hit or miss as to whether a blog or other news outlet will ever get around to reviewing it.

Apple runs a program where developers can generate a number of free promotional codes for publicity purposes. When a code is redeemed either in iTunes or right in the App store on the iPhone, the free app is installed just as if it was bought. Traditionally, the bulk of these promo codes go to sites like ours that provide publicity and hence sell apps. While Apple was briefly blocking any apps with a 17+ rating from getting promo codes, as Michael reports that policy has shifted again. The developer of Eucalyptus, an e-book reader, was surprised to find that Apple is now allowing him codes for his 17+ rated app.

[To give you an idea of how involved the app approval process can be, we earlier reported that Eucalyptus was first denied approval because they were using the Project Gutenberg catalog of public-domain books where you could download a totally non-illustrated version of the Kama Sutra. No one seems to know why the plethora of other Project Gutenberg powered e-readers had no trouble being approved, or why these apps' ratings varied.]

In late May a new site called AppGiveaway opened and partnered with developers to get paid apps into users hands for free. Sites have always had the occasional contest to win something, and that's always been good for sales, since whether you win or lose, if you entered, at least you were introduced to the product.

AppGiveaway does it differently. It provides an incentive to both buyer and seller. Developers contribute promo codes to be given away; each contest contains a full description of the app and a number of screen shots. Contests, plus a small number of Apple related stories, are all AppGiveaway does. In the month of June, AppGiveaway awarded over 130 apps and so far over 100 have been given out in the month of July. Checking the site now, there are currently 20 apps that you can enter and win.

Check it out. You'll be helping yourself and in turn, helping the developer community to get the word out. Then come right back and tell us what you found.

Regular readers will know I'm hooked on astronomy programs, and we've reviewed quite a few in this International Year of Astronomy.

Today only, Carina Software, one of the premier publishers in the field, is giving away Mac, PC, and iPhone versions of their software for next to nothing. It's in honor of today's 40th anniversary of the Apollo 11 moon landing. On the iPhone, they are free, for the PC and Mac version, US$00.01. Note: Due to server overload the Mac and PC versions have been pulled for now. Here is the latest from the Carina website:

"First, our iPhone apps SkyVoyager and SkyGazer will continue to be free downloads from the iTunes app store all day long. No changes there!

At approximately 6:20 AM PDT this morning, we recieved a call from our web-hosting provider, bluehost.com, asking us to suspend the one-cent download offer for our Voyager and SkyGazer desktop software. Demand was so high that our automated serial-number generator, which emails serial numbers to customers, was sending out several thousand emails per hour - putting us in violation of our Terms of Service (TOS) agreement, and causing our email service to be suspended.

Our email has been restored, and we are catching up on our backlog of missing-serial-number emails manually. All customers who have purchased one-cent downloadable copies of SkyGazer and Voyager should recieve their serial numbers from us by the close of business today, Monday, July 20th, 2009.

After continued discussion with our web-hosting provider, it is unlikely that we will be able to continue providing our desktop software as one-cent downloads for the remainder of the day."

I'll focus on the iPhone offerings, in particular the more advanced SkyVoyager [App Store link]. Carina is also offering SkyGazer for free, which is slightly less advanced and has fewer features. I'd go for SkyVoyager at these prices.

OK, what can you do with this software? Well, just about anything to help you under the stars or to plan a night of observing. The software picks up your location from the GPS, and of course the date and time. It will display more than 300,000 stars and 30,000 deep sky objects (clusters, nebula, galaxies). You can see the night sky from any location on earth, and on any date you choose, even going back or forward centuries.

The software also contains NASA images, and work from other astrophotographers. Amazingly, if you have a computer controlled telescope, like a Meade, Celestron, and some other less well known brands, SkyVoyager will soon be able to wirelessly connect to it and steer to objects you select on the iPhone. You can get a complete list of supported scopes here. Note: To make the connection to your scope you'll need a piece of hardware, the Sky-Fi connector, not available until late September. Go to this page for more info.

There are a lot of iPhone/iPod touch astronomy apps out there. SkyVoyager is full featured, and has very deep and complete data bases, especially considering it is running on a phone or iPod touch. It updates comet positions, along with asteroid and satellite orbital data. It requires a WiFi network for these downloads.

The only thing I'd like to see is the ability to use the iPhone tilt/tip sensors and compass to match your sky chart to where it is pointing in the sky. That works really well on Pocket Universe, which I reviewed recently.

SkyVoyager normally sells for $14.95, so free is pretty compelling. Remember, it's today only. My fellow amateur astronomer colleague Steve Sande is reviewing the desktop versions of this powerful software today as well, so be sure to check out his thoughts. They are selling for only a penny, so it's truly an 'astronomical' saving.

Check these screen shots to see SkyVoyager in action:

What a great opportunity to brush up on controversies in Astrophysics, Game Theory, or France since 1871. Apple and Yale University have partnered to bring complete Yale courses to iTunes U and they are free for the clicking.

Apple was already offering significant quantities of lectures and interviews from Yale, but now complete courses are being offered for free. For now, there are 13 complete courses online, one subject area is composed of about 40-50 separate podcasts. That's a lot of information and precious knowledge.

If learning about the American Novel since 1945, or Biomedical Engineering is your thing, click right on over. There is probably something on the list you'll find interesting, to say nothing of the many great lectures.

The twists and turns of the digital revolution have been breathtaking to watch. From my home, an office, sitting at an airport, or riding along in a car, bus, plane or train I can take my favorite music, movies, or listen to experts relate the latest discoveries about Black Holes of the history of Psychology. What a world.

Yep. Zip. Zero. Nothing. Fortune Magazine is reporting that Microsoft will announce a free, web based version of Office to be available sometime next year.

Before you ask, it appears the online version will support Firefox and Safari, as well as the ubiquitous Internet Explorer.

Is Microsoft nuts? Maybe not. The software giant is fighting free versions that do pretty much everything Office does. Microsoft apparently believes it can hook people on the free version, while getting them in the tent and anxious to upgrade to the application version that will work better and faster and have some more features.

On the Mac side, Apple sells the iWork package for US$79.00 which is cheaper than any Mac version of Office available. There is also Neo Office (free-donation requested) and Think Free Office ($49.95) along with Google Docs -- which is not as feature rich as Office but it is offered at no cost. Open Office (free) is also a possibility. There is a version for both Intel Macs and PowerPC hardware.

Normally we'd just send out a tweet about this (that's usually what we do with free app deals, so if you're not one of the almost 40,000 people following us yet, you definitely should be), but this is a good one, and it's a holiday, so we wanted to make sure you knew. Sega is feeling particularly generous this weekend, so they're giving away free copies of their Columns Deluxe, a port of the old Genesis game, for the iPhone. The game is a pretty straightforward port -- it doesn't have any extras, and the accelerometer controls are a little tacked on from what we hear, but if you like the puzzler gameplay of Columns, and you should, it's a fun one to pull up for a few minutes at a time.

Plus, it's free -- from July 3rd to Monday, July 6th, Sega says it'll be on sale for the low price of nothing at all. Sounds good to us -- sit back, put a few brats and burgers on the grill, grab a Corona (and lime, of course), and enjoy some old-school dropping block gameplay for no money at all.

TUAW reader Jim Carroll is worried: "It is crunch time for your site," he warned ominously in an email yesterday.

Jim is worried that security updates made available via the iPhone OS 3.0 updates last week will only be available to iPod touch users through the obligatory $10 upgrade. "Please use your power as an Apple site to raise the issue." Please, Jim. We're blushing.

"As a long time computer user I am unaware of a similar incident where a company would charge for security updates," he writes. Companies charge money for updates all the time -- operating systems and anti-virus software take time and energy to make, and companies want to get their investment back. Apple has been kind with free updates to Safari, but only because they gain revenue from it via the Search bar.

Apple has always charged iPod touch users for major updates, of course, but security updates have most often come free. 1.0.1, 1.1.2, 1.1.3, 1.1.5, 2.1, and 2.2 all included security fixes, but were free to iPod touch users. (The latter two cases were free for those who bought the 2.0 update.)

1.1.5 is an interesting case. It was released a few days after the 2.0 update, and included security updates that were wrapped into the 2.0 update.

My advice? Have patience. This coming week or next, I have confidence we'll see an update for 2.x (2.2.2 perhaps?) that leaves out the new features, but includes the same security updates found in 3.0 at about $9.95 less.

We're also beginning to hear whispers of a 3.0.1 update for the device to help resolve WiFi issues in the new release; a German iPod user reports being told by an AppleCare representative that an update is expected shortly. Take that with the appropriately sized grain of salt.

Thanks, Jim & Oboewan!

Shazam is an app that's been on my iPhone since the beginning, and in fact, everyone should have it. Besides the fact that it's free, it's useful in a very innovative way: if you hear a song anywhere that you don't know the artist or name of, just pull up the app to hear it, and it'll tell you what you're listening to. I still use it occasionally to find new music that I hear and like out in the world, but I never really paid attention to updates -- they usually just got included in my monthly or so "download all updates" click. Apparently Shazam's been updating something fierce, however, and the newest version has all kinds of functionality that you might not expect.

At some point, they added in Twitter integration, so if there's a tune you want to share that way, you can do so. There's always been a way to share them via email, too, and they've spruced that up a bit by calling it a "postcard" (conveniently also giving your friends a chance to buy the music you hear, and probably put some change in Shazam Entertainment Ltd.'s pocket -- it is a free app, after all). But the most interesting new feature is that Shazam now tracks your location when you "tag" a tune, so that eventually, you'll be able to look at a map of where you found all this new music you like.

Sure, it wasn't exactly a pressing feature, but it is cool to see your "musical journey," and have that information about not only what you tagged but where you tagged it. Shazam is an app that's probably on your iPhone already, but it's worth another look.

If you didn't jump to pick up Kaloki Adventure [App Store link] after our first look last week, now's your chance: the game is on sale today (not tomorrow, apparently -- you've got under 24 hours) for just $1.99, a buck cheaper than the usual $2.99 price. The game offers some fun but casual real-time strategy business simulation, so if your dream has ever been to own a burgeoning spaceport, they don't come cheaper than that.

And as an added bonus, NinjaBee is also offering a catchy tune from the game's soundtrack on their website for the low, low price of completely free. It's the jumpy, swingin' background music to the main gameplay, composed by Eric Nunamaker, who's apparently been working on video game music for quite a while.

Oh, and finally, while we're talking about awesome iPhone games on sale, Peggle is only a buck. 'Nuff said.

Normally the Lonely Planet guides for iPhone are $15.99, so any way you look at it, getting the San Francisco guide (iTunes link) for free is a great purchase. At worst you'll see if you like the Lonely Planet way of doing things in a travel guide and at best you might discover something new in San Francisco. Yep, the guide is free in anticipation of WWDC, allowing attendees to do a little sightseeing if Apple's sessions aren't enough for you.

I've only spent a bit of time with the app (I'm not in San Francisco, so testing the "nearby" functions won't happen until next week), but if you're familiar with the Lonely Planet guide books, you'll be pretty familiar with the content here. The app has a really long list for the table of contents, something I felt could be handled better. If you want to find travel information, for example, you'll have to scroll somewhere about 40% down -- this is not optimal if you need info in a hurry. In fact, scrolling through longs lists is so annoying Apple gave the iPod app a search tool and Coverflow browsing. Luckily the LP guide provides a text search which I found quite useful.

Browsing content is terrifically easy, with a slim design that allows you to move forward and back between articles, increase text size or go back up to whatever screen you were previously at, like a search page. Speaking of those searches and the content, a cursory search for Moscone brought up no precise info on the convention center. It is mentioned in a reference to Yerba Buena, but otherwise lacks details.

The map suffers from static information and a lack of one-way street info (kind of important in cities filled with them, but only if you drive). I much prefer the maps and interaction of the AAA Discounts app, complete with animation and cleaner graphics. There are complaints about missing hotels and whatnot, but I've never fully trusted any guidebook to find every hotel and restaurant. Plus, there's always Urbanspoon and a plethora of apps for discovering new places to eat around you.

Obviously if you are ever planning to travel to San Francisco it'd be hard to turn down a free app so full of info. I don't think it'll replace anything like your Maps app, or Urbanspoon, or Yelp-based apps, but that's not the point. As a guide full of history and photos, hotel and restaurant data, workable maps and tons of "getting around" data, the Lonely Planet San Francisco City Guide is incredibly handy.

Tomorrow, as Naven Johnson might say, "The free comics are here! The free comics are here!" Because tomorrow is Free Comic Book Day, one glorious Saturday when comic shops are filled with titles specifically for giving away to just anyone in order to perhaps lure in some brand new folks and maybe get back some fans who have lost touch over time. Either way it's a prime opportunity for you to let your Geek Flag fly.

I assure you, there's nothing like a personal Stormtrooper escort walking you to your car and one of the few opportunities you have for that (locally) is tomorrow. There are a fair number of comic book stores around here, not to mention Dark Horse Comics World Headquarters, the source of All Star Wars Comics Including Those Manga Ones (or as I like to call it, One Reason Kelly Will Never Leave Portland).

What's that you say? You don't know where your local comic book stores are? Have no fear! Today iVerse Media (creators of those Star Trek Comics in the App Store) released the free iPhone app Comic Shop Locator [iTunes] for just this purpose! You can enter your zip code or let the app use your location and it will give you the three closest shops (in the USA). Tap one and you can either see it in Maps, or give them a call. Not only is this handy if you don't spend a lot of time in comic shops, but if you happen to be in an unfamiliar city you can still find out where to pick up the new Aliens/Predator or that Teenage Mutant Ninja Turtles 25th Anniversary Reprint you've been looking for.

A list of events for tomorrow is also online for your perusal. I hope there's something awesome happening near you!