The official page for the app just went live over at Tapulous’s site. The app is the first in the revenge series not to retail for free — it costs 99 cents, and potentially will result in far more revenue via in-app purchasing.

For those of you worried that Tap Tap Revenge is now all about the Benjamins, fear not, there are still plenty of free tracks available for download, with more planned as future updates. It’s basically the same set-up that existed with TTR2, but without the need to buy special separate themed apps from Coldplay, etc., in order to get that bonus content. Instead, you use in-game “coins” to acquire new songs.

Opening up the app, I found right away that TTR3 was quite different from its predecessors. The first thing I had to do was choose a username and an avatar. The avatar seems to be randomly generated from a stock selection of different parts, so I of course spent far too long randomizing my appearance until I found something somewhat acceptable.

After that, I checked out the store to see what I could spend my hard-won coins on, and was not surprised to find avatar items and clothing among the available purchases. You use coins to buy avatar items, but luckily coins are earned in-game and don’t cost any actual money.

Buying tracks uses the in-app purchasing feature introduced in iPhone OS 3.0, and will prompt you with the amount the item you’ve chosen costs and a dialog that allows you to either buy or cancel the transaction. Tracks come in Packs, each featuring two or more songs. I tried purchasing a Blink-182 track pack for $2.99, and then thought better of it.

The actual rhythm game part of Tap Tap Revenge 3 works just like you remember it, if you played any of the predecessors. Colored orbs travel down three lanes, and must be tapped when they reach the bottom of your iPhone’s screen in order to score points and rack up a high score. Your score affects the number of points you earn, which you can then spend on avatar items.

Song selection in the in-app store is a bit hit or miss, and features a lot of content already available on previous installments, but the game’s only been out for less than a day, so I suspect the library will fill out quite nicely in time. If you liked the previous games, and the added incentive of a growing library featuring top artists and a built-in rewards system appeals to you, 99 cents is well worth the price of admission for TTR3.

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Guitar Rock Tour has arrived to challenge Tap Tap Revenge‘s rhythm-action throne. The new arrival touts a bevy of terrific tunes to tap along to, plus the option to play drums or guitar, loads of characters and unlockable awards.

While Guitar Rock Tour may be Rock Band squished on to the iPhone, it’s just as loud and rocks just as hard. Whereas Tap Tap Revenge is free, Guitar Rock Tour costs a few bucks ($9.99) and as such is polished better than a factory fresh Fender Strat.

At the core of any decent music-based game is the soundtrack and, while all of the song in GRT are sound-a-likes of the real thing, these are well performed covers and during a frenetic, in-game jam session the tracks come across as hard-rocking and suitably authentic.

Choose your track in Guitar Rock Tour

There’s a real range of tunes too, most of them classics in their own right, from contemporary tunes like Bloc Party’s Banquet across to classic hits with recognizable riffs such as Message in a Bottlee by The Police. Conversely, Tap Tap Revenge is heavy on excellent, yet obscure, indie and electronic artists spiced with a few chart-topping acts like Kaiser Chiefs and The Offspring.

In essence, the soundtrack for Tap Tap Revenge is more experimental and certainly more edgy. Where Gameloft call on a Blink-182 cover for some cool caché in Guitar Rock Tour, the folks at Tapulous feature girl-kissing chart topper Katy Perry’s latest hit in Tap Tap Revenge.

Play drums too in Guitar Rock Tour

One thing that Guitar Rock Tour implements wonderfully is multiple instruments. For each track you’re able to choose between shredding your way to fame on guitar or beating your way out of obscurity on the drums. In particular, playing the guitar is a joy: with chords executed in a smart way and techniques included for hammer-ons and pull-offs.  As a result, it’s far more tactile-feeling than TTR.

Another feature in Guitar Rock Tour that is absent from Tap Tap Revenge (though not necessarily missed), is a Tour mode. After picking a character and signing a cartoony contract, you and your amateur band take to the road, playing tunes across the U.S. and Canada, and rocking your way to stardom.

Along the way you also pick up various awards, meet some odd characters and unlock new tracks to play live. The story is indeed silly, yet it’s great fun and certainly a compelling way of playing through the game’s selection of 17 tunes.

Stylized clarity in Tap Tap Revenge

In terms of the graphics, the aesthetic in Tap Tap Revenge has a stylized clarity, suiting tons of musical genres, while Guitar Rock Tour is designed with a gritty rock feel — it’s like Guitar Hero meets one of those dingy little bars where the bands jam around Hendrix tunes. Effectively, it’s cliché but it works and screams of console-gaming.

But although Guitar Rock Tour clearly means business, there’s a show-stopping bug that lets the entire game down. On tracks that require more shredding and finger-picking, the backing track falls out of sync with the guitar track. As a result, the game suddenly becomes a lot harder to play and the music ends up sounding like a bad covers band who can’t seem to play in time.

The folks over at Gameloft have made a raucous rocker of a music game, with a stomping soundtrack too, and yet sometimes it just doesn’t work. For now, we’d say hold back from investing until Gameloft patches the problem and releases an updated version of Guitar Rock Tour.

In the mean time, grab Tap Tap Revenge, it may not have all the extras of Guitar Rock Tour, but it’s free, plays very well and includes some fantastic tunes too.

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