This update from Apple will improve the functionality of this app. No new features are included. Updated to support 64-bit.

* Added a link to our new game, SimplePlanes. Build airplanes and test them with realistic physics and see how they fly. If you like SimplePhysics, then you will love SimplePlanes! You can find it on the App Store now!

* Added link to my new game, SimpleRockets, which is a game where you build rocket ships and blast off into space and explore the solar system, all while using realistic physics: https://itunes.apple.com/us/app/simplerockets/id663068211?ls=1&mt=8

* Added support for iPhone 5 display * Added support for iPhone Retina display * Added support for iPad Retina display * Added a new load blueprints screen

* Tweaked the editor to make it more obvious when you are in the Erase Mode. * Added a "Reset Game Data" feature for educators so that they can quickly erase all designs when preparing for a new class of students. This is available in the info menu under the main menu under the credits.

Big Update * 2 new levels - Train Bridge and Boulder Ramp * Improved the user interface based on user feedback. * Be sure to check out my new game, Dummy Defense for more physics & engineering puzzles!

* Added 180 degree support.

* Major bug fix. I think I got the bug that has been plaguing so many players. It was hard to find, but I believe it has now been vanquished. Thank you for your patience! * Add link to Santa's Engineer.

* Added PlayHaven * Fixed a small yet frustrating bug on the submarine level. If you are having problems with the game crashing, try restarting your phone. If that does not fix the problem, try uninstalling SimplePhysics and re-download it from the app store.

* Added the Submarine level where you must build a submarine that can reach a depth of 300 feet. * Added 3 tiers of difficulty to each level, ranging from 1 star to 3 stars. In order to get all 3 stars, you will have to be excessively clever! * Fixed the physics on the Crane level. * If SimplePhysics crashes after installing this update, try restarting your device. If that does not work, try uninstalling SimplePhysics, and re-download it. Don't worry, you won't have to pay for it again!

* Added ragdoll support for the Finger Test. Now you can put ragdolls in every level! * Added in-app purchase to view a solution for each level. If you are stuck, you can purchase this and it will unlock a solution for all levels in the game.

Since the 1.7.1 update rolled out so quickly after 1.7, I've included the changes for 1.7 in this description also. Changes in v1.7.1 * Bug fixes Changes in v1.7 HUGE UPDATE! Four Huge New Features! * New Level - Bomb Shack Protect the crash test dummy from explosions by building a structure to withstand explosions! * Ragdoll Physics The new crash test dummy in the Bomb Shack level fully supports ragdoll physics, so make sure you run the Finger Test on the new level and toss him around! * Explosion Test The Finger Test has an explosive new twist. Now you can tap the screen to create explosions in the Finger Test and obliterate your structure. I have painstakingly gone back through all previous levels and added this feature, so now you can blow up all levels. It's a....blast. * Slow Motion New feature to enter slow motion while running a test. This is a great way to see where your structure is failing, and it's also fun to watch explosions in slow motion, especially when it sends the crash test dummy flying through the air. Remember, if you have an idea for the game, please submit it at my uservoice page. Let's build a game together ;) http://simplephysics.uservoice.com

HUGE UPDATE! Four Huge New Features! * New Level - Bomb Shack Protect the crash test dummy from explosions by building a structure to withstand explosions! * Ragdoll Physics The new crash test dummy in the Bomb Shack level fully supports ragdoll physics, so make sure you run the Finger Test on the new level and toss him around! * Explosion Test The Finger Test has an explosive new twist. Now you can tap the screen to create explosions in the Finger Test and obliterate your structure. I have painstakingly gone back through all previous levels and added this feature, so now you can blow up all levels. It's a....blast. * Slow Motion New feature to enter slow motion while running a test. This is a great way to see where your structure is failing, and it's also fun to watch explosions in slow motion, especially when it sends the crash test dummy flying through the air. Remember, if you have an idea for the game, please submit it at my uservoice page. Let's build a game together ;) http://simplephysics.uservoice.com

* New Level - River Dam! * Bug fixes The River Dam level was the highest voted level on the SimplePhysics uservoice page! If you have an idea for the game, turn it into a reality by submitting it at the uservoice page, and vote on the ideas you like! Let's build a game together ;) http://simplephysics.uservoice.com

* Added universal support for iPad! * Bug fixes and user interface tweaks If you have an idea for the game, then visit my uservoice page and submit it! This is a way to make your ideas come to life. Let's build a game together ;) http://simplephysics.uservoice.com

* Two New Levels! * Two Story Tree House Level * Staircase Level (with hidden surprise!) * Removed tooltip when switching between build/erase I'm still working on more levels! If you have an idea for a new level, please submit it at my uservoice site: http://simplephysics.uservoice.com I hope you enjoy the update!

* New Level - Truck Crane - Design the boom of a crane that must support 100 tons. * Changed the level complete dialog to be a little less annoying I'd like to hear your ideas! If you have an idea for SimplePhysics, please tell me about it at my uservoice page: http://simplephysics.uservoice.com I take this page very seriously, in fact the new Truck Crane level was the top voted idea at my uservoice page, and that is why I chose to implement it.

* Finger Test - use your finger to push and pull on your design. You can use this with pinpoint accuracy, or you can just smash your design to smithereens. * Skyscraper Level - Good luck! * Adjusted difficulty of existing levels * Bug fixes

Big Update! * Leaderboards! * Tutorial Level * Increased difficulty of all levels * Added budgets to levels * Added save/load * Bug fixes