Must have iPhone 4 apps and iOS4 applications

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The release of the latest iPhone 4 has increased the credit of smartphones by supporting large number of applications and lots of its inbuilt features. The possibilities are endless service calls over the Internet, gaming, GPS, etc.. So here are the top and best applications you must have on your iPhone 4 or iPod with iOS4.

1. I Am T-Pain:

Launch the I Am T-Pain app, select your favorite track, and just sing into the Mic on your iPhone. I Am T-Pain will record and Auto-Tune your voice. Then, with a single button, share your song over email, Facebook, or MySpace.

You can also select the Freestyle option and use Auto-Tune for singing without companion tracks. Use this option if you simply want to send someone an Auto-Tuned greeting over email (Shawwttay!).

• The application bundles several of T-Pain’s top songs including Bartender and I'm N Luv (Wit a Stripper), complete with lyrics, integrated Auto-Tune settings, and timings.
• The App also bundles six previously unreleased T-Pain original beats.
• Additional songs including On A Boat, Buy U A Drank, and Good Life can be purchased within the App.
• Use Auto-Tune with your existing iTunes library.

2. Dazzling Flashlight:

Turn your shiny new iPhone 4 into a dazzling flashlight. Dazzling Flashlight 4g gives you the quickest way to light anything in the dark. It uses the built-in camera-flash of your iPhone 4 and gives you the brightest light which you can get with an iPhone. A unique feature is the bi-directional light...Dazzling Flashlight 4g can turn the display white, so you get light from both sides- the back and the front!

Features:

• One-tap to dazzle!
• Loads quickly
• Light from camera-flash
• Light from iPhone screen
• Retina display ready
• Fast app switching
• Battery level indicator in the app

3. Twitter:

Discover what’s happening right now, anywhere in the world with the official Twitter for iPhone app. Don't have an account? Just sign up from the app! Realtime search, Top Tweets, trending topics and maps show whats happening now everywhere and nearby. Tweet, send DMs, share photos, videos and links to your friends and the world.

4. TomTom U.K. & Ireland:

Get the TomTom navigation app and have smart, easy-to-use, turn-by-turn navigation on your iPhone or iPod touch, whenever and wherever you need it. he new TomTom app guides you even while you're on a call or running a different app on your iPhone.

Features:

• IQ routes technology: use the knowledge of millions of drivers to drive the faster way, any time of day.
• Text-to-Speech: keep your eyes on the road while your tomtom app announces every turn, including street and place names.
• Advanced lane Guidance: gives you extra clarity when navigating difficult junctions.
• Help me! Emergency menu: help me! Emergency menu - local information to get help quickly
• HD traffic: the best traffic information for the fastest way through the jams and the most accurate arrival time. Available via in-app purchase.
• Local search with Google: find shops & businesses wherever you are, and navigate directly there.
• Automatic day & night mode: adjusts screen brightness based on time of day.
• Fast route re-calculation: reroutes you if you miss a turn.
• Landscape/portrait orientation option: place your screen sideways or upright and the app responds, allowing you to view the road the way you prefer.
• Designed & optimised for iphone & ipod touch: the app responds to the same familiar, multi-touch capabilities you're used to. Easily scroll through menus or pinch to zoom in and out of the map.
• iPod player support: control your ipod easily from within the tomtom app.
• Automatic music fading: ensures that you will never miss a navigation instruction.
• Destination dialing (iphone only): call points of interest from directly within your app.
• Navigate to contacts (iphone only): navigate directly to people and places in your address book.
• Safety cameras: drive safe and save money with fixed camera warnings.

5. Truphone:

Truphone keeps you in touch with the people that matter to you with FREE Wi-Fi & 3G calls, instant messaging, Twitter and great savings on international calls to mobiles and landlines anywhere in the world. It now runs on now runs in the background and allows calls while multitasking. There are no contracts with Truphone. You will get free call credit to get started!

Features:

• Make FREE Wi-Fi & 3G calls to Truphone, Skype and Google Talk users
• Search Truphone's directory to find and add your friends easily
• IM and multi-chat with Truphone, Facebook, Skype, AIM, GoogleTalk & MSN
• Always on and contactable with full iOS 4 multitasking support
• Send and receive SMS's, including group SMS's, to your TruFriends and phone contacts
• Get FREE voicemail with push notifications
• Make low cost calls to any local or international number
• Works anywhere, even when not in Wi-Fi

6. Golfshot: Golf GPS

Golfshot is the #1 provider of pre-mapped aerial image courses. GPS and Aerial views require an iPhone 3G or 3G-S with internet connection (Edge, 3G or Wifi) and require that a Google Maps image of the course is available. Non-GPS iPhone users get the ability to view hole distances from their selected tee-box, and plan their approach shots with TouchPoint positioning – touch a target anywhere on the hole and get distances to that point from your selected tee-box and from that point to the green.

Features:

• 33,000+ Courses
• GPS Rangefinder with large numbers, front, center and back of green, and up to 40 points per hole
  
• GPS Aerial view with TouchPoint technology
  
• Assign ideal layup distances for your approach clubs
  
• Track your distance for any shot.
  
• Includes Golfshot: Scorecard - an easy and efficient scorecard that automatically generates PGA Tour quality statistics and allows golfers to share and compare their rounds.

7. Loopt:

Find out who's around, what to do, and where to go with Loopt. Introducing background location sharing on the new Loopt so that you can always stay connected with your close friends and family.

Features:

• Turn on background location sharing to find out when friends are nearby and to let your friends know when you are nearby.
• Find out where your friends are right now and Ping them to find out more about what they’re doing – view their latest updates and comment on them.
• Discover the best places and events around you or your friends – browse comprehensive listings from Zagat, Citysearch, Bing, TastingTable, Zvents, Metromix, & SonicLiving and rate them.
• Instantly Share your updates with friends – show your Facebook and Twitter friends what you’re doing with photos and places in one Loopt Share.

Checkout for Top 100 iPad Games.

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8. Dropbox:

Dropbox is the easiest way to sync and share your files online and across computers. This app requires a Dropbox account. If you don’t already have a Dropbox account, the app will allow you to create one for free.

Features:

• View photos, videos, documents, and presentations in your Dropbox on the go.
  
• Save photos and videos taken with your iPhone's camera to your Dropbox, including HD videos on your iPhone 4!
  
• Share and send files via email, or copy and paste links to share with another app.
  
• Export Dropbox files to other iPhone and iPad apps.
  
• "Favorite" files to download them for fast, offline viewing.
  
• Swipe your way through photo galleries

9. LED-Torch:

LED-Torch is a simple, yet amazingly convenient application that turns your iPhone into a powerful flashlight by using the iPhone's LED Flash. It can help you find your way in a dark room, unlock your door on a dark night, read a map or a thousand other things.

Features:

• Super fast launch time (no fancy graphic).
• Auto-on when app is opened.
• Double-tap to toggle on/off to prevent accidental taps.
• Flashlight.
• Faster on/off toggling.
• Strobe light.
• Adjustable strobe light frequency.
• Beautiful, realistic and simple on/off sound.
• Double tapping the home button does not turn off the light.

10. Real Racing:

Experience all of the excitement, competition and glory of championship racing. This is handheld racing like you've never seen before, in the most stunning, realistic and intuitive racer on iPhone!

Race the way you want to, with 5 different game modes. Challenge friends in local multiplayer and leave them in your dust! Work your way up from rookie to world champion in Career mode. Slice off another split second in Time Trial and upload your personal best. Join an online league and battle your way through ranks of players from all over the world to advance to the next division. Only got a minute? Get behind the wheel for a Quick Race. Firemint Real Racing provides authentic pack racing action like no other iPhone game. Take to the circuit in a six car grid and jostle your way to the lead.

11. 4 Light:

4 Light is a multi-purpose, instant flashlight designed exclusively for your iPhone 4. Torch, strobe or timed light can all be summoned quickly for your convenience. We use the iPhone 4 camera's built-in LED flash torch, which is much brighter than other flashlight apps which use only the screen. Get 4 Light today and reach for your iPhone 4 next time you need light. To switch modes while using 4 Light simply switch tabs. Tap the start button to activate the light.

Features:

• A Torch flashlight can be turned on or off with the tap of a button.
• The Strobe can be set to variable speeds ranging from 20 to 1 flash per second.
• The Timer will emit a continuos stream of torch light for a set length of time.

What else can be done with 4 light:
Sig

• nal a friend.
• Find me in a crowd.
• A timed night light for the kids.
• Take on camping trips.
• Performing random shadow puppet shows.
• Book, key, or purse light!
• Emergencies.
• Parties.
• Emergency parties!

12. iMovie:

Make beautiful HD movies anywhere with iMovie, the fun, feature-rich video editing app only for iPhone 4. Create a video postcard of your day at the beach and publish it to the web — without ever leaving your spot in the sand. Or make a movie of your child’s birthday party and send it to your parents — while the party is in full swing. With iMovie for iPhone, you can start several projects and finish them whenever you want and wherever you are.

Made for Multi-Touch:

• Tap to add or record video right into your project.
• Drag to trim the lengths of video clips and photos.
• Pinch to zoom the timeline and get a closer look.
• Slide to scrub through the video in your project.

Give it a theme:

• Choose from a selection of themes including Modern, Bright, Travel, Playful, and News.
• Each theme includes a matching set of titles and transitions – plus its own soundtrack.
• Instantly change themes or swap themed elements in your project.
• Titles and graphics automatically update with location data from your video.

Add music and photos:

• Select from included music that matches each iMovie theme, or select from your own song library.
• Enable ducking to automatically lower the volume of background music and highlight audio from video clips.
• Add photos from your own library, or take a picture and drop it into your project.
• Customize each photo with a unique “Ken Burns” panning effect.

Share your movie:

• Export your movie in one of three sizes: Medium, Large, or HD.
• Share your movie on the web in a MobileMe gallery or on YouTube.
• Send your movie to friends and family in an email or via an MMS message.
• Easily sync your movie back to your computer.

13. Quordy:

Welcome to QUORDY, the touch-play, word search game! The object is to form words among the 16 letter tiles. QUORDY can be played alone or against friends and is perfect for play on-the-go. Shake or touch your iPhone or iPod Touch to jumble the letters and begin a game. Touch the first letter of the word you want to make, then slide your finger to the next letter in your word. As long as the letter tiles connect--in any direction--you're on your way.

The real fun begins when you send a QUORDY challenge to a friend. Your friend receives the same game board, and QUORDY compares your results and tallies the score. Are you the QUORDY master in your circle of friends?