iPhone 3G things you should know about App Store apps

The App Store is no doubt one of the best things to have happened to the iPhone (and the iPod touch). Users are happily adding a wide array of apps to their devices, usually with little or no difficulty. Still, occasionally things go wrong. At such times, beyond the standard troubleshooting advice you’ll find here, it pays to know at least a bit about what’s going on “under-the hood.” Here’s a Q&A detailing 5 things you should definitely know: 1. Where are iPhone apps actually stored on a Mac? When you click the Applications item under Library in the iTunes sidebar, a display appears that contains icons for every app on your drive (even ones not currently installed on your iPhone or iPod touch). From the Finder, you’ll find these apps stored in the ~/Music/iTunes/Mobile Applications folder. The only apps you won’t find are ones that you downloaded directly on your iPhone but have not yet synced to your Mac. They’ll wind up in the folder after your next sync — assuming you click the Transfer button when the dialog pops up asking about “purchased items…that are not present in your iTunes library.” 2. I opened the Mobile Applications folder. All the files there end in .ipa. What’s with that? Consider ipa an abbreviation for “iPhone application.” As with virtually all Mac OS X applications (yes, even the iPhone runs a version of Mac OS X), applications are actually packages (special folders designed to appear as files in the Finder). As such, you can peek inside a .ipa item and view its contents. However, the .ipa item is a flat package (a topic I covered in a previous column); this means that you won’t be able to open it via the typical method of selecting Show Package Contents from the item’s contextual menu. Instead, use the shareware program Pacifist. Specifically: Make a copy of the app that you want to check (say Koi Pond.ipa). Change the name of the copied file to Koi Pond.ipa.pkg. Click “Use .pkg” when the dialog appears asking what you want to do. Open Koi Pond.ipa.pkg in Pacifist. Granted, there’s not much you are likely to want to do here. But you never know. As one example, do the following: Via Pacifist, navigate to Payload > KoiPond.app >Info.plist. Extract this file. Open the file using Property List Editor (or any other utility you have for opening .plist files). From here, you can confirm the version number (CFBundleVersion) of the app. This should be the same number you’ll find in the Version item of the Summary tab, if you select Get Info for an app in iTunes. Also in the .plist file, note the line that reads UIStatusBarHidden Boolean Yes. This setting is why you don’t see the status bar at the top of the screen when running Koi Pond. Just for fun, you could change Yes to No to bring the Status Bar back (see the final item below for more details).

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iPhone: Trouble in the App Store - Apple 2.0
The iPhone 3G is OK, if you ... same things. Their successes and failures will put the whole 3G Iphone and APPs store launch in perspective. As for Steve Jobs, you ... We should all know ...
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Today @ PC World 10 Things You Need to Know Before Buying a 3G iPhone
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10 things you should do with your iPhone - Tech Experts - Ted ...
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Loopt launches its iPhone app with a surprise partner: Yelp ...
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Apple announces App Store for iPhone, iPod touch - Engadget
... know how we're going to grab all those snazzy new SDK-developed apps: App Store. The application will run right on your iPhone ... you get" is true, but many of the applications for the iphone simply do simple things that should ...
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Test driving iPhone 3G (Verdict: mediocre)
... your new iPhone 3G improve, and you find more positive things to say. (I would love to know ... Yeah, the app store is great and I have enjoyed using several of the apps ... iPhone 3g user. I'll second the motion that you've got a lemon iPhone and should ...
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Source: CNET News
NewsDateTime: 9/17/2008

Read all '"iPhone 3G"' posts in Crave
... should be no surprise to current iPhone 3G ... you want from the iPhone 2.1 software update? Let us know ... Apps as "complicated." If TomTom already has its application up and running to its satisfaction on an iPhone, why don't we see it for sale in the App Store?
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Review: Scoreboard apps for iPhone
Scoreboard apps for iPhone These apps all know the score, but some share it better than ... are plenty of score-tracking applications available via the App Store to help you ... But which app should you turn to for all your sports report needs?
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Apple iPod Touch (2nd generation)
... you know it, but with softer edges. Features Crammed beneath all the polished stainless steel and brushed glass is Apple's iPhone 2.1 software, which plonks an App Store ... 3G internet, GPS and camera, some may see the Touch as "iPhone lite", but the attractive price and ever-expanding range of apps to play with should ...
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Source: ZDNet Australia
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Apple’s Capricious Rules for iPhone Apps
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Source: New York Times Blogs
NewsDateTime: 9/16/2008


3. There are several copies of some apps in the Mobile Applications folder (with names like Koi Pond.ipa, Koi Pond 1.ipa, Koi Pond 2.ipa etc.) What gives with that? First the good news: If you’ve updated to iTunes 8, this should no longer happen. Prior to iTunes 8, these duplicates accumulated each time you updated to a newer version of an app (or even redownloaded the same version). All downloads were retained, even though only the latest copy was used. Starting in iTunes 8, the older version is moved to the Trash, leaving just the newest version in the Mobile Applications folder. As a bonus, the ipa file now includes the version number in its name (such as Koi Pond 2.1.ipa). If you still have duplicates hanging around, drag them to the Trash and delete them. You only need to retain the copy with the most recent modification date. If there is any doubt as to which copy to keep, go to Applications in iTunes and select Show in Finder from any app’s contextual menu. This will take you to the Mobile Applications folder with the active copy highlighted. That’s the one you want to keep. Although they are usually harmless, these duplicates can occasionally cause problems. See my Macworld article for one example; it describes a problem that cropped up after an app changed its name (from Box Office to Now Playing). 4. Can I run apps on my iPhone that other people have purchased? No and Yes. The system for apps works the same way as for music and video purchased from the iTunes Store. By default, App Store apps can only be run on iPhones and iPod touches synced to the computer used to purchase the software. However, a user can authorize up to 5 computers to have access to their iTunes Store purchases. Thus, to use an app purchased by a friend: First, select Authorize Computer from iTunes’ Store menu on your Mac and enter your friend’s iTunes Store account name and password (or have him do it). Copy the desired .ipa item from his computer to yours, by whatever method you prefer. Don’t place it in your Mobile Applications folder. Leave it on your Desktop. Launch iTunes and select Applications from the sidebar. Drag the app item from the Desktop to the Applications display. The app’s icon should now appear in the display. A copy of the .ipa item is also placed in your Mobile Applications folder. Sync your iPhone. The new app should be added to your device. There may be other ways to accomplish this, but this method worked for me. If you ever lose track of who purchased a given app in your Library, select Get Info for the app. The Summary tab lists the purchase information. 5. What about on the iPhone itself? Is there an equivalent to the Mobile Applications folder? And can I access it? Yes, there is an equivalent folder and you can access it. But only if you jailbreak your iPhone or iPod touch. Otherwise, the iPhone OS software effectively keeps you out. Assuming you are willing to take the risk, you can use PwnageTool or QuickPwn to jailbreak iPhones or iPod touches running even the latest iPhone 2.1 Updates. For example, I had no trouble jailbreaking my iPod touch with QuickPwn. After jailbreaking, then what? There are utilities you can download to your jailbroken iPhone that allow you to explore the device. Other utilities give your iPhone the capability to mount as an external drive on a Mac. However, there’s a simple solution that requires no additional iPhone software nor any settings changes: simply use DiskAid on your Mac. Here’s how it works: With your iPhone or iPod touch connected, launch Disk Aid. Select Root Folder from the pop-up menu in the lower left (this option is not selectable unless you have jailbroken your device). When you are warned about the risks of doing this, tell DiskAid to Go Ahead. Once you are at the root folder, navigate to /User/Applications. Alternatively, navigate to /var/mobile/Applications. Both paths wind up at the exact same location. [Note: the iPhone’s pre-installed apps are separately stored in the /Applications folder.] Here you will find folders representing every app you’ve downloaded from the App Store. Their names will be an indecipherable bunch of hex code. If you click on any folder to view its contents, however, you’ll see the actual name of the app (as seen for KoiPond.app in Figure 1).

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