Just got it yesterday and it is a nice painting program that have some things on offer that other programs lack. It supports Samsungs S-pen and there is also a destop version that is interactive with this.
It is on sale for two monies...

Google Play:
https://play.google.com/store/apps/details?id=com.ambientdesign.artrage.playstore

ArtRage for Android is a realistic painting and drawing app that gives you a toolkit filled with tools that work just like the real thing. Smear and blend thick oils on the screen, sketch with pencils and smudge the strokes to create gradients, work like you would on canvas or paper.

Each tool includes settings that mirror real world properties such as Paint Thinners, Pencil Softness, and other familiar properties. The app includes a range of default presets for every tool, and you can easily create your own specialized custom presets. It also supports pressure data from the Samsung S-Pen to add an element of natural expressiveness to your paint strokes.

Along with the full range of familiar tools like the oil brush, inking pen and pencil tools, ArtRage includes important digital features like Layers with Blend Modes, a Fill Tool, the ability to add Reference and Tracing images while you draw, and more.

ArtRage for Android comes with an intuitive interface that keeps all the important settings readily available but gets out of your way as you work so that you creative flow isn't interrupted.

ArtRage Paintings are fully compatible with desktop versions of ArtRage, and can also be exported as PNG and JPG images. You can import photos as paint layers, reference images or tracing images. Record your paintings as Script files for playback at larger resolutions in our desktop software

Tools:

Oil Brush, Watercolor, Airbrush, Palette Knife, Paint Roller, Paint Tube, Ink Pen, Pencil, Felt Pen, Wax/Chalk Pastel, Eraser, Flood Fill, Glitter Tube, Gloop Pen.

Each tool has a range of settings that reflect familiar properties such as paint thinners or pencil tip softness. Tools apply texture as well as color, and blend under the brush.

Add unlimited Layers to your painting, adjust visibility and opacity, rearrange and merge. ArtRage also supports a full range of Photoshop Layer Blend Modes.


Interface:

Designed for compact operation at different resolutions and screen orientations. The interface has been designed to maximize your creative space without hiding away critical functions such as tool and color selection. As you paint, it gets out of the way so that you don’t have to stop and manually adjust panels. With support for Multi-Touch gestures for canvas manipulation, Undo/Redo, and Brush Size, important shortcuts are available without needing menus. Also supports Stylus-only mode to avoid accidental finger painting.

Have been on the verge of depression today as everything is fucked up in the world,
​even in my adopted beloved Spain. So seeing this made the world alright again!
Just read about this on Boing Boing and it is a band that created a font by peeing on stretched bed sheets taking photographs quickly and vectorizing the result, baking it lastly in a font program.

If this is not genius art I do not know what is!
The typeface is for free as well. 
Just downloaded so have not had time to use it yet.
Ohh now the excitement roars in me,
maybe now is the time for that novel to be written and printed on musty paper with Pissjar font.

To get the font go here:
https://www.pissjar.com/

It just gets better and better!
So far the coolest thing must have been the person that used Phonopaper code in GIF for a changing soundtrack and also must give props to my friend Cosmo Koroly that since some months used it in a painting for invocation of Vodou entities that soon will be posted!

This post may not make much sense if this is the first time hearing about PhonoPaper so to get the idea go to: http://www.warmplace.ru/soft/phonopaper/

When PhonoPaper came out there got some experiments made to see how well it would respond to paintings on canvas to use for a exhibition. The goal being to have paintings that would look good as abstract paintings ( this obviously is going to take a lot of time to make it work ) and also be able to have sound through the PhonoPaper app.
So far there has only been a little bit experimenting but it does respond well.
The canvas used have been glued with paper and then painted white as the idea was also to see if how it would work handpainted as graffiti straight on a wall.
First there was a recording straight into the telephone into PhonoPaper that got saved and exported into Virtual ANS. That is the image in the beginning of the post and the higher frequencies is cut off as it still sounded okay without and there is too much trouble to paint all the higher frequency lines...
Do not have a printer available now so imported the image into Virtual ANS but
it was slightly difficult to get it to sound exactly the same as if it would have been printed out on paper and read with PhonoPaper but at least after some general fuckeroo in Virtual ANS it sounds more or less as it would printed and read in the PhonoPaper application:

and here is picture of the painting to get an idea how it looks like and to show that you do not have to be so precise copying shapes.

Painted the shapes twice to see what difference it would make in sound.

Lastly here is a video of the resulting sound of the painting.

Think that it is pretty impressive!
So there is a lot of room for experimentation with paintings as it can be any size ( as long as it fits in the camera view ) and can allow for a whole new way to compose especially on larger canvases / surfaces. It would be excellent to have a bigger wall space with a ever changing composition! 
Think that it is not too hard to learn to paint certain sounds as the shapes that got used in the painting are simple and is clearly reproducing the words.
Or learn shapes for certain notes / noises etc.

Want to mention that PhonoPaper in this moment of time ( August 2014 ) does not allow for video recording as there seems to be some trouble with the video files being corrupted so I did not upgrade the application as the latest upgrade took away video recording and it is true that a lot of media players do not want to play the file but it did work on some and uploaded to Youtube the video works fine obviously.
Surely Mr Nightradio will fix this soon!
And just want to express my gratitude to Mr Nightradio for inspiring me so much with his applications / programs! May you live long and surprise us over and over again!

Play Store link:
PhonoPaper

Read about this app on The Creators Project website and being a big website writing about many interesting things regarding art and technology had some hopes. 
It got installed but uninstalled after about five minutes. 
It is not bad but not much fun either. 
It reads the colours and different colours will give you different sounds that you can then play using the C-Major scale and with an addition of four drum sounds in the bottom row. 
Maybe the most interesting part is that the app is developed by an artist and his other projects looks interesting!

To read the Creators Project article go here:
http://thecreatorsproject.vice.com/blog/listen-to-the-color-of-pizza-with-this-synesthetic-app

To go to the artist / developers website:
http://julianglander.com/

Play Store link:
ROY G BIV Color Synth

Not much of a music app post but as it is something that have excited me since Virtual Reality finally is getting here after Oculus Rift got announced a year ago or so.
God damn it I have been waiting for this since I tried a very basic Virtual Reality game with headset and tracking of movement in a amusement park at the end of the eighties. 
At the time reading Cyberpunk books obsessively and expecting it to be just another year or so to be flying around in all kinds of environments!
So it just took 25 years more until it finally is happening.
The problem being broke and it is going to take some time until I can get my hands on some Oculus rift glasses or the Sony version. 
Luckily enough there is some alternatives already and one of them being cardboard glasses that you can make yourself! 
It is surprisingly simple and there is a lot of room for your own inventiveness to modify or do your own design.
There is also to my surprise a bunch of apps to go with them. 
There is also two other cheaper glasses that you can buy.
Not only for games have been reading of a lot of different artist projects being made already and this is just the beginning. It is funny that just a year or so before Oculus rift got announced William Gibson wrote a novel taking place in the near future that had 
Virtual / Augmented reality used as art projects where you overlaid reality and 
being able for example see historical death scenes etc. 
Actually it is unlimited and games are probably going to be the least interesting aspect?
What this is going to mean for music making is not clear yet but one thing is to be able to visually be in the same space rehearsing, controlling Virtual entities on stage and at the same time be there on stage virtually or playing virtual instruments in the air for example. Something that already exists is virtual classes where you can overlay your own hands on top of the teacher.
Well this could easily turn into rambling without end so it is better to end it here and just post a video from Google talking about their cardboard glass project and then post links for further exploration.

Links:
Google Cardboard page
Google Cardboard app
Refugio 3D glasses
Durovis Dive Glasses

So now there is one application in the MOMA permanent collection. How great is that!
So if you did not know but Björk released a interactive application for her album called Biophilia some years ago. I did write about it when it got released for Android but with this news it has to be brought up again.
So developers the bar is raised. 
Now the apps do not only have to sound good but the goal is to get them looking so good 
that they get into the institutes of high art as well.
Hmmm visually appealing and interactively speaking, 
of the music making applications which is the best looking one???
I think for my money maybe some of the skins that have been created for Caustic are high on the list or maybe Heat Synthesizer that have a lot of thought going into not only the sound but also visually... I do also like the Virtual ANS and how it looks plus that it can become very interesting looking after some drawing and manipulations...
It is a matter of personal taste but it certainly means a lot if MOMA comes knocking 
on your door!

Playstore link:
Biophilia