I write Elvish 1.0.1, an app from Sviluppo iPhone Italia
This application is not about elvish languages at all but merely uses characters that are vaguely reminiscent of Tengwar to create the sort of "stylish" images that some people seem to think lends them an aura of having a slightly mysterious, yet refined taste.
I have not downloaded it because it is not free, and I can think of many better uses of 79 cents. But there is no need to, because the website and screen images really say it all. What the application does? There will be a small collection of grotesque images of, say, blue "elves" (looking more like a Gollum from another planet than anything else), dragons, and also (for some dark reason) the neck of a bald gentleman of the burly sort that usually finds employment in a club, where they toss people out who are not meeting the local standards for hip-ness.
These images can then be overlaid with a number of words that the user can enter. They probably have some multi-page interface for that to make it look more snazzy - although a simple text area would suffice here.
The characters (rendered in a shiny golden tint) are then displayed over the image in a strange character-set that is vaguely reminiscent of the Tengwar. At least, that is what they say. I cannot judge it because I am not familiar with Tengwar. Maybe it is just one image, recycled all the time. Or maybe they took Greek letters, extended the stems a bit and made them slightly curved.
And of course, the finished handicraft can then be exported to Facebook and probably some other "social networks" in order to convey the message "Look how slightly mysterious and superior stylish I am!" to all their friends.
The results of the Dutch Jury: minus 8 points.
Here's some images. But beware, they are not for the faint of heart