This camera app is able to take pictures of a real starry sky. You can take stars of the first magnitude and stars of the second magnitude or less in good condition.

You can also get the pictures processed through more than seventy kinds of image processing filter.
You have only to set your iPhone camera toward a starry sky on a tripod, set the number of exposures, release the shutter and just wait a minute or so to take pictures of the starry sky.

This app can take pictures of a dark starry sky clearly by the technique of multiple exposures that makes exposure time quasi-longer.
Please try with the following multiple exposure parameters for your first use.
Brightness = "normal"
The number of exposures = 50

When you set the number of exposures to one, you can use camera app as normal camera.

The main functions of this app are as follows.

[Initial setting]
(1) Selecting Camera or library
Select a rear camera or front camera to use. Or, in addition, if you select a library,
you can import photos from camera roll without taking photos.
(2) Selecting resolution
Select ‘High’, ‘medium’ or ‘low’ resolution. The resolution depends on iPhone model as follows.
iPhone5, iPhone5c, iPhone5s:
(rear camera) 2448x3264, 1080x1920, 360x480
(front camera) 960x1280, 720x1280, 360x480
iPhone4, iPhone4s:
(rear) 1936x2592, 720x1280, 380x480
(front) 480x640, 480x640, 360x480
iPhone3GS:
(rear) 1536x2048, 480x640, 360x480
(3) Setting multiple exposure parameters
Select ‘bright’, ‘normal’ or ‘dark’ as the brightness of the exposure.
You can set the number of multiple exposures from 1 to 100. (If you have selected ‘Bright’, the number of multiple exposures is only from 1 to 20)
(4) Setting color temperature
When you set color temperature to ‘apply’, you can set it from 1,000 ° K to 12,000 ° K.
If you don’t set color temperature to ‘apply’, it uses automatic setting.
(5) Setting exposure compensation
If you set exposure compensation to “apply”, you can set it from -5.0 to +5.0. (This is an original value and different from the EV value.)
(6) Setting dumb shutter
If you select silent shutter mode, you can reduce the shutter sound with the volume button. However, if you set it to "mute", the shutter sound will become normal sound. When the number of exposures is 2 or more, the number of shutter sounds is one (for iPhone5).

[Camera function]
You can do camera work according with the parameter set in advance. It allows for pinch in/pinch out digital zooming. In default, the focus is set in the long distance rather than the automatically setting for shooting the stars. If you take pictures of objects at short distance, tap the object on the preview screen and adjust the focus.
The shutter also has a 2 -seconds timer for avoiding camera shake when you tap.

[Display list function]
The photos taken in this app is stored in the camera roll and in app itself too and you can see the list of them with the shooting date and time information.

[Image processing function]
When you tap the image on the list, it displays the list of filters for image processing.
It has about 70 filters such as 'Brightness','Contrast','Blur','Sharpening','Sepia','Monochrome','Edge detection','Sketch' and so on.

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This app include the following open sources. AQGridView (Copyright(c) 2010-2011, Kobo Inc.) and , GPUImage (Copyright (c) 2012, Brad Larson, Ben Cochran, Hugues Lismonde, Keitaroh Kobayashi, Alaric Cole, Matthew Clark, Jacob Gundersen, Chris Williams. All rights reserved.)
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NOTE:
It does not guarantee reliably taking pictures in any case.
We are not able to offer compensation for any damages or losses that may occur during its operation.