Have you ever purchased an app then found out the next day it went on sale? Or worse yet, the next day it’s free? It happens all the time. Apps constantly go on sale for half off or free. As a user of the App Store, it is frustrating when you just decided to make the purchase only to find out you could have waited a few hours or days to get it heavily discounted.

Well in comes a new free app called BargainBin. According to the apptism, BargainBin’s main features are:

•Sale prices updated as they happen
•Price tags that indicate when apps are: Free or Bargains (50% off or greater)
•Filters that allow you to see Free Apps only, Bargain Apps only, or All apps on sale
•Browsing by a specific category or all Bargains
•Browse only popular apps that have gone on sale
•Viewing screenshots of the application quickly, without having to go to the app store
•Viewing application descriptions quickly, without having to go to the app store

Now that’s what I’m talking about. I have had this app installed for about a week and I love it. I check it everyday. Why not? With just the tap of my finger, I can quickly find everything that is on sale or reduced to free. What a concept!

So head on over to the App Store and make sure you install BargainBin. Cause only fools pay full price for apps.

Sometimes it’s hard to sift through the millions of websites out there to find the fun, unusual, creative, and especially, the useful ones. And word of mouth can only take you so far. Well, leave it to Gadget Teaser to give you a hand in your search. Once a week, we’ll highlight one of our favorite sites that not everyone knows about. I like to think that we here at Gadget Teaser are performing a public service for you… the avid gadget blog reader the general public.

This week’s Sweet Site of the Week is: mint.com

If you’re looking for a place to track all your personal finances, set and monitor reasonable budgets, and find ways to save money at the same time, then try mint.com.

Mint.com is a safe and anonymous website that tracks your spending and budgets. It performs most of the tasks that you get from expensive off the shelf software in a free, accessible, and secure environment. In fact, I find it’s easier to use.

First, the setup is a breeze. Just create an account and in just a few minutes you can add all your checking, savings, credit cards, loans, and retirement accounts into the system. You can also add your assets like your home and your car. In fact, mint.com will calculate your home value for you, sum it up along with all your other assets and debts, then give you an estimate of your total worth. Pretty cool.

After the initial set up, mint.com takes over. It will give you suggestions for ways to save money. After you set yourself some budget goals, you can create all kinds of alerts to make sure you are keeping on track. Mint.com will also send you weekly or daily updates regarding what’s happening across all your finances. I even got an email once letting me know that my credit card interest rate was increasing. The email told me I should call and see what’s up and even provided me with the 800 number for that card. That sold me right there.

Oh, and for those of you wondering why I haven’t mentioned Apple in this post, mint.com has a great iPhone app too. Free, of course.

So check out mint.com. You, and your wallet, will be glad you did.

The first turn-by-turn GPS app for the iPhone was released this week from a company called XROAD. And to pretty glowing reviews:

The iPhone has unquestionably dominated the mobile phone industry for the past two years. One of its biggest advantages over other devices is the long list of applications of every variety that can be downloaded to it. There are “apps” for everything from keeping track of your Twitter feed to following your favorite baseball team. Finally, after nearly two years, a developer has released the first real-time, turn-by-turn navigation application for the iPhone. XROADS G-Map ($19) is clearly the best real-time navigation option for an iPhone right now, but we ran it through the same tests we would a stand-alone TomTom, Garmin or Mio system to see how it fared with the big boys of navigation.

…

While there is room for improvement in this product, this is also the first attempt at a real-time turn-by-turn navigation application for the iPhone. As long as XROADS is willing to follow what other developers have done by offering free updates, this app is sure to take a chunk out of the GPS navigation market.

Wow, that’s not what I expected for the iPhone’s first crack at a turn-by-turn GPS app. Kudos to XROAD. And at $20, this app is a great deal. But there are some obvious improvements to be had.

First, and foremost in my mind is voice routing. When I drive I am usually paying attention to the road and listening to the radio. I don’t mind getting interrupted to let me know a turn is coming. In fact, I expect it. I can’t be expected to be watching the road and a map at the same time. It’s not safe or fun.

Also, the lack of street names is tough. Especially when driving on crowded city streets. When there are many streets coming up, it is nice to be able to be able to check the street you’re turning onto before you get there. And even better, the street before that.

Knocks aside, this looks to be a winner which is hopefully a good sign of things to come. XROAD did the best they could do for now without using all the hard drive space on the iPhone. Some small improvements here and there would blow away the competition. Especially when the competition costs about 10 time more.

Tapulous recently released it’s follow-up to the very popular Tap Tap Revenge called Tap Tap Revenge 2. Tap Tap 2 comes with some great visual enhancements as well as a much larger library of free songs.

The download catalog features over 150 free new songs. There’s something for everyone: rock, dance, electronica, pop, hip hop, even country music. The catalog includes hits from Death Cab for Cutie, The Crystal Method, Daft Punk, Weezer and Nine Inch Nails. Every Thursday, we add more awesome free tracks from featured artists.

The overall game play experience is improved. They have added “tap and hold” and “multi-tap” on some of the more difficult levels. Also, Tapulous added a few new features like a career mode to go along with the online play.

Another nice addition is the kids mode. If you’re comfortable handing over your iPhone to you little one, they will definitely enjoy playing at a level appropriate for them.

Tap Tap 2 looks to be a great follow-up to the ever popular Tap Tap Revenge. I would definitely recommend this app for everyone.

It’s time to break through the clutter and get down to business. This weekly post is going to list not the top 10, or the top 5, but the top 3 of anything gadget related. Why the top 3? Because anything more would be watered down.

So without further ado, here are the top 3 free music apps for the iPhone.

3. American Public Media’s – Public Radio Tuner
You don’t have to be a nerd to enjoy public radio. I do. And this app provides access to hundreds of public radio stations which will keep you up-to-date with the most honest and unbiased take on news available. So whether you prefer to listen to “This American Life,” “Marketplace,” or “Wait Wait… Don’t Tell Me,” this app will hook you up with free streaming NPR anywhere you go.

2. Shazam Entertainment Ltd.’s – Shazam
Who hasn’t ever been listening to the radio wondering what the name and artist of the song is you’re listening to. Well, use Shazam and you’ll never wonder again. That’s right, with Shazam you only have to open up the app, click “Tag Now” and in about 10 seconds you’ll have the artist name, song name, album name and more. You’ll also have links to download the song from iTunes, watch the video on YouTube or read reviews. Now that is sweet.

1. Pandora Media Inc.’s – Pandora Radio
Traditional music stations should be scared because with Pandora Radio you can get personalized radio stations for free that stream directly to your iPhone. No commercials. No bad music. Just create a station based on an artist or song that you like and Pandora instantly starts streaming music that matches your taste. Best of all… no commercials! Sounds crazy, I know. Pandora Radio even learns. Don’t like a song being played? Give it a thumbs down and never hear it again. Plus, I’ve never had an issue with songs skipping or slow playback, even while streaming over Edge. For all these reasons, Pandora Radio is the best free music app on the iPhone and also the reason I will be cancelling my XM account.