Rating: 4.5 stars
Price: FREE
If you want a powerful tool that packs the basics of a DSLR into your phone, get Camera Awesome from Smug Mug.
It’s got everything. Extra grids, multiple timer and "burst" shooting effects and a horizon tool that helps you keep your camera level. Furthermore, you can set up a timer and interval shots. Set up one function to ease camera shake, and another to shoot multiple photos at two different speeds with one click in “Burst” mode. You can even lock your white balance while shooting video. When you’re done, you can add one of nine effects filters.

Rating: 4.5 stars
Price: $0.99
The only app of its kind and developed by Cogitap Software, Slow Shutter Cam allows you to control the shutter speed on the iPhone camera.
It has three capture modes, and also adjusts aperture/light sensitivity, something you may have thought you could only do on a DSLR. You can also choose to turn the flash on permanently, like you can when shooting video, to help expose darker images.

Rating: 4.5 stars
Price: $0.99
This neat app made by Occipital lets you take 360-degree panorama photos, and stitches everything together for you. It doesn’t do a perfect job, but the app is fast and convenient. The seamless integration with social media makes it perfect for sharing your experience with others.
Interior designers should be all over this.

Rating: 4 stars
Price: $1.99
Fast Camera from i4software does just what it sounds like: It takes pictures really fast — 800 per minute, up to 1,000 rapid fire images shot in a continuous shooting mode.
The app works with both front and back cameras. You can adjust the delay between shots, set a picture limit, a timer and export your pictures as a video.
Perfect for sports or taking pictures of kids who just won’t sit still. Caution against putting over 700 pics in any one folder — the app sometimes has trouble and crashes.

Rating: 4.5 stars
Price: $2.99
Camera Genius from Code Goo lets you geotag your photos as you take them and instantly share with friends.
It’s perfect for the novice who wants to get the most out of the iPhone’s powerful camera, without being overwhelmed by options.
It allows you to zoom in video mode, but we suggest selecting a focal length and sticking to it, since video tends to become choppy if you record and zoom at the same time.

does slow shutter cam works by the concept of timer? is it?
You missed true hdr, autostitch, tilt shift gen, and cortex cam
OMG. no camera+? Pete and Lisa will be angry now ;p
For some reason it caused major crash on my iPhone 3Gs. But it also showed in apple store as free. Maybe it is not the real app. The name and screens are identical. Anyone else experienced this.
Great and helpful article, by the way.
Nice nice!!
Can we get a 5 Android Photo Apps version?