Do you have a budding architect or structural engineer in the house? This is a great app for them. SimplePhysics lets you simulate designing and building different structures like tree house. The objective is to build a sound structure at the lowest possible cost. You can get as creative as you like with your structures and the app will simulate the actual physics of your grand design. Blow up your architectural creation or test it using a rag doll dummy.
A fairly realistic way to take building with blocks or Lincoln Logs to the next level for your creative kid or even your inner child.
Recommended for ages 7 and up. App is available for free download for a limited time. Otherwise, it is normally $1.99. This app has over 500 reviews and is rated 4.5 stars on iTunes.