[APP] PixStack Photo Editor

PixStack makes it easy to edit your photos!

Features:
[ul]
[li]Open a wide range of images, including BMP, EXR, GIF, ICO, JPG, PCX, PNG, PSD, and TIF.
[/li][li]Save to a variety of formats, including BMP, EXR, J2K, JP2, JPG, PNG, PBM, TIF and TGA.
[/li][li]Open and edit images of any size; the only limit is the amount of available memory.
[/li][li]A number of effects and filters are available: grayscale, sepia, emboss, blur, invert colours, noise, oil painting, ripple, sketch and whirl, among others.
[/li][li]Adjust the brightness, contrast, hue and saturation of an image.
[/li][li]Flip the image horizontally/vertically.
[/li][li]View and navigate through the image history.
[/li][li]Print images using Google Cloud Print.
[/li][li]View the image histogram and adjust the image curves. The red, green and blue channels can be adjusted separately, or as one unit.
[/li][li]View standard image properties (height, width, file size), as well as multiple types of metadata. Supported metadata formats include EXIF, IPTC, XMP, GeoTIFF and GIF. If the image has GPS metadata, you can also view the location of the image on a map.
[/li][li]Custom zoom and pinch-to-zoom.
[/li][/ul]

This is the first app I’ve made for Android; any feedback would be greatly appreciated!

Free version: https://play.google.com/store/apps/details?id=com.recursify.pixstack.free
Paid version: https://play.google.com/store/apps/details?id=com.recursify.pixstack.paid

Screenshots:

Version 1.3 is now available. This release adds several new features and fixes a couple of bugs.

Changelog for 1.1:
[ul]
[li]Updated FreeImage to version 3.15.4.
[/li][/ul]

Changelog for 1.2:
[ul]
[li]It is now possible to pan/zoom the image whilst the selective color controls are shown.
[/li][li]Fixed a crash that would occur when cropping an image.
[/li][/ul]

Changelog for 1.3:
[ul]
[li]Added the ability to save to the GIF, HDR, ICO, JNG, PFM, PGM, PPM, WBMP and XPM types.
[/li][li]The bit depth can now be set when saving.
[/li][li]Split the save functionality into save/save as. In most cases, the image can now be saved without going through the save as dialog.
[/li][li]Added ASCII art effect.
[/li][li]Added a generic convolution effect.
[/li][li]Previously, when using the selective color effect, tapping a point outside the image would select the color on the border. Similarly, the selection rectangle edges could be moved even when the movement was well away from the selection edge and outside the borders of the image. Fixed.
[/li][li]When dragging the selection rectangle, its position was not been set correctly. Fixed.
[/li][li]Previously, when the selection rectangle was moved completely outside the image, the shading was not been applied correctly. Fixed.
[/li][li]On some devices, the gallery app is not available. This was causing a crash when attempting to open an image. Fixed.
[/li][li]The open button is no longer highlighted on first time startup.
[/li][/ul]

Version 1.4 was released a day ago, and includes a few improvements.

Changelog:
[ul]
[li]Added replace color effect.
[/li][li]Added cycloid to the list of ripple wave types.
[/li][li]Added horizontal/vertical/left diagonal/right diagonal line detection kernels to generic convolution set.
[/li][li]In certain circumstances, opening the image properties dialog would crash the app. Fixed.
[/li][li]Updated to achartengine 1.1.0.
[/li][li]Optimized native code.
[/li][li]An error message is now shown when there isn’t enough memory to crop the image.
[/li][/ul]