Saving money, watching HBO videos on an iDevice, and a new Twitter app make up some of the best iPhone apps of the week.

AppAdvice iPhone App Of The Week: HBO Go by Home Box Office, Inc.

HBO’s universal HBO Go iOS application is now available to download in the App Store. The app is currently available to download for free, and the service itself is free to use for HBO subscribers (through “participating television providers”).

HBO Go works over both Wi-Fi and 3G, and it gives users access to 1,400 of their favorite shows – including True Blood, Game of Thrones and Boardwalk Empire. Because the app is universal, the same version will run natively on all of your iOS devices.

HBO Go – Released: April 29 (free, universal); original article

New Releases – April 24-30, 2011

TweetDeck

Earlier today, TweetDeck (for iPhone and iPod touch) received a huge update – something its developer called a “re-imagining.” The new version (2.0) is “rebuilt from the ground up,” and is undoubtedly much improved – but, is it good enough to challenge the likes of Tweetbot and the official Twitter app?

TweetDeck – Released: April 26 (free); original article

Remember It App

Remember It App is an incredibly clever iPhone app that can provide users with a helpful reminder if they leave anything important – like a prototype iPhone 4 – at a bar, or anywhere the item isn’t meant to be.

Basically, once you’ve reached a destination – like a bar or theatre – you open Remember It, and tag the location. Then, once you’re outside of a preset radius (50, 200, or 500 feet), the application will sound an alarm, reminding you to have picked up your important item.

Remember It App – Released: April 24 ($.99); original article

Order & Chaos Online

Gameloft’s answer to the insanely popular PC and Mac MMORPG World of Warcraft (WOW) has just hit the App Store in the form of Order & Chaos Online. Like WOW, this is a full 3D game that has social elements and a lot of player-interactivity involved.

You need to be connected to the Internet via Wi-Fi (word is that 3G isn’t supported) in order to play Order & Chaos because it is designed for online play. In order to succeed in Order & Chaos, you will need to trade, interact, form teams with other players, and possibly duel as well.

Order & Chaos Online – Released: April 27 ($6.99, universal); original article

Onavo

Carrier-introduced data limits are not fun, especially when going over those limits lead to a hefty cell phone bill. However, help has arrived. The Onavo app for the iPhone help users regain control of their data usage and save money in the process.

Onavo – Released: April 28 (free); original article

Updates

Seamless

Nothing ruins a good song like turning it off. Now leaving iTunes doesn’t mean the music can’t continue. The Seamless app transitions music from iTunes to an iPhone/iPod touch without ever missing a beat.

It’s 7 a.m. on a Monday morning. To get awake (and stay that way), you’re listening to the latest song from Lady Gaga on your computer, while getting ready for work. But, when the time to leave for work arrives, you still want to listen to the music.

Rather than finding the same song on your iPhone and starting it again, use Seamless. The app slowly turns the sound of the song down on iTunes, while turning it up on your iDevice. The process also works in reverse, all thanks to a Wi-Fi connection.

Seamless – Updated: April 25 ($1.99); original article

RedLaser

RedLaser, the popular barcode scanning app for iOS – has recently been updated. Now, users of the app can generate their own QR codes (for URLs, contacts or text) and share them with friends. Furthermore, the new version of the app – which is “faster than ever” – also features support for multitasking.

RedLaser – Updated: April 29 (free); original article

Fring: Video Calls + IM

Fring, the popular VoIP application that lets users make free video calls (over Wi-Fi and 3G), now allows Group Video Calls. The new feature, originally offered only through a beta, is now available for everyone.

Fring: Video Calls + IM – Updated: April 27 (free); original article

Race After 1977

Race After 1977 by Xpect Games is a post-apocalyptic racing game where you compete against other survivors across five different nuclear wastelands. It features 3D graphics, nine vehicles, and Game Center integration.

Retro and grunge racers have been around for awhile, but few games have married the two in a satisfactory manner. At first, I thought the game would lean more towards the retro (i.e. Interstate ’76 for the PC…one of my childhood favorites) than the grunge, but it turns out that Race After 1977 most closely resembles the contemporary and somewhat popular Uber Racer for the iPhone.

Race After 1977– Updated: April 25 ($2.99); original article

What do you think of our picks? Leave your comments below.

The Best iPhone Apps Of The Week is published each weekend; a companion piece, The Best iPad Apps Of The Week, is published separately.