The Windows phone app which has gone free next as myAppfree app of the day is Pokemon XY Lockscreen. With Pokefondos XY (Pok.) you can set as lock screen of your device the best pokemon of the six generations.
Pokemon XY Lockscreen Features:
You can download your wallpapers to the media library to share or use them in other applications.
In pokemon preview: Swipe down to see how the wallpaper would look if applied as lock screen.
Themes: You can set a default theme or wallpapers group and others that are automatically updated when you change the accent color of your device.
Use your voice: You can set the lock screen of your phone just saying “Pokefondos” and the name of the pokemon or theme of your choice. You can also use voice commands within the application to update the lock screen, look for a pokemon or use the color filter.
Double tap to set the lock screen on the pokemon view.
Color Filter: Find faster the wallpapers that combine with the accent color you choose. Live tile showing the background applied.