iLuv Drawing Monsters is a fun drawing app teaching kids how to draw monsters with step-by-step guides. iGameMom reviewed another app from the same developer iLuv Drawing Animals. You can go HERE to get an idea about the app. Note it only works on iPAD. 
Introduction from the App Store:
Learning to draw monsters will boost imagination, creativity and confidence in your budding artists! This step by step learn to draw application offers 20 different ways to create cute monsters. The app offers coloring, editing, decorating and sharing toolset to further customize their creations!
Look for an educational and creative value beyond just coloring apps; drawing apps with blank pages; or how to draw apps with limited choices and features!
✔ Learn to draw by tracing over step by step templates.
✔ Very intuitive and easy to use interface.
✔ Friendly voice instructions.
✔ 20 cute monsters to choose from.
✔ A vibrant coloring pallet to color the finished drawing.
✔ Combined brush and color pallet.
✔ Many custom backgrounds and textures to add to the finished drawing.
✔ Add stickers to the drawing.
✔ Editing tools such as eraser, redo, undo, start over.
✔ Save in a drawing book or photos.
✔ Print your masterpiece.
✔ Ability to edit the saved drawing.
✔ Blank pages to practice what you learned or freehand drawing.
Skills addressed:
✔ Art and creativity, right brain thinking.
✔ Basic building blocks of a drawing.
✔ Fine motor skills for younger audience.
If you would like to check it out or purchase it, please use the App Store button provided below. The cost is the same to you, but iGameMom gets a small percentage. Thanks for your support! Note: The button works for all countries.
For more monster apps for kids, check out our top picks of 25 Monster Apps for Kids, including apps to read about monsters, apps to create monsters, apps to play with monsters, and apps to learn with monsters. 
Thanks for all the updates. I think my son would really like this one!
My son loves it. He’s been drawing the monsters since we had the app …
Awesome! Love your updates.