Arguably, There is an iPhone App for everything! And iPhone has always been talked about for that incredible camera it has, and an app-store to fuel all those crazy needs of any Amateur photographer to a seasoned Pro. So It doesnt surprise me when I read that iPhone 4 is now the most popular camera on Flickr in the cameraphone category but it is also dethroned the biggies like Nikon D90, Canon EOS 5D Mark II, Canon EOS Digital Rebel XSi, Canon EOS REBEL T1i being its closest competitors.  So here are 10+ must have iPhone Apps.  Also check out 10 Fun Photo Applications for iPhone. Do let us know if you stumble across any new apps.

Instagram

It’s a free, fun, and simple way to make and share gorgeous photos on your iPhone.  Pick from one of several gorgeous filtered effects or tilt-shift blur to breathe a new life into your mobile photos. Share your photos in a simple photo stream with friends to see – and follow your friends’ photos with the click of a single button. Every day you open up Instagram, you’ll see new photos from your closest friends, and creative people from around the world.

Procamera

ProCamera’s exclusive Expert Mode for separate focus/exposure and White Balance adjustment gives you full control over your camera hardware.  With Pro FX Studio you’ll be able to transform any picture into a beautiful piece of art with a single tap. Powered by the most advanced OpenGL technology, there have never been such stunning effects paired with high-speed performance.

FX Photo Studio

Various Lo-Fi effects, Vintage, Bizarre, TiltShift, Sepia, Glow, Grunge, Blur, Textures – FX Photo Studio has them all and even more.

Perfect Photo

28 most essential editing tools & effects to improve your pictures on-the-go.  Including RED EYE removal and SPOT healing tools.

Camera+​

Whether you’re a seasoned photographer or someone who’s barely touched a camera, Camera+ will make you love taking photos.

Cross Process

CrossProcess adds color and character to your photos by emulating the look of Cross Processing film. CrossProcess turns your ordinary iPhone shots into beautiful, one of a kind images with unique colors and contrast. Based on looks from real film stock.

Camera Zoom 3

Zoom in/out with your iPhone Camera!  With Camera Zoom, you can now zoom in and out in real-time when taking pictures, by just simply moving the slider. Also comes with Anti-Shake, Timer and exposure settings.

CameraBag

Dramatically enhance your photos using the many classic camera and film simulations in CameraBag. It’s like having a dozen unique cameras all in one app!  CameraBag focuses on emulating styles and processes from some of the most interesting cameras of the past to enhance the mood of an image, and the results are stunning.

MonoPhix

MonoPhix is the ultimate vintage black & white app which packs power and a huge featureset in an incredibly easy to use package.  MonoPhix is the only app that allows total control over the intensity of the dark and light tones in your image, allowing ultimate contrast variations. This is accompanied by two types of highly adjustable vignetting, the ability to set the black & white layer as a transparent layer over your original image to create great vintage effects and much more.

ShakeItPhoto

ShakeItPhoto brings the memories of taking Polaroid photos to your iPhone and iPod Touch. Take a photo and out pops a perfect Polaroid photo. Watch your image develop and shake the image just like a real Polaroid photo to make it develop faster. Our “Perfect Processing Technology” makes your Polaroid photos look just like the real thing.

Dermandar

DerManDar for iOS lets you capture and share panoramas in just seconds. It’s easy to use and its fun interface will change the way you take photos! With Fully automated capture system, Blazing fast stitching, see the results in no time, Immersive 3D viewer, pinch or double tap to zoom, autoplay. And Full 360 panoramas.