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The ipad app for programming has nice missions for the kids to progress and is really nicely done, but at the cost of all these background animations draining the ipad battery. The 3D interactive assembly instructions are a big step up from the printed booklets and make it so much easier to build the robots. The flip side is that without the app you have no hope of completing any robots. I would also prefer that programming for the missions had some more hints and hand holding towards the "correct" solution - the kids sometimes tend to randomly put the blocks together without giving much thought to it, just because they want to rush into the next mission. The best part is that now you can also program/control the robots from MIT Scratch on a PC, just need to install an extension that provides the bluetooth link. After a recent Windows update the Web version of scratch failed to connect to the LEGO boost controller, but the desktop Scratch still working fine.
Value for money was amazing (the set was on sale) - it was what made me pull the trigger. The fact you can only have one droid working at a time is kind of hard to swallow - I understand the power elements are expensive, but with an RRP of over $350 what make this set so expensive if there is only one power component? Also to note a you have to go through the hoops of the app to progress your build. Again, I understand the thought behind it, but it would be great to get a set of paper instructions as well.
Our 9yr old son put all of it together on his own (poor dad was left out!) and has easily used the coding program to get them all moving. Turned out to not be as challenging as were hoped, but it still wasn't easy!
This set is a lot of fun to tinker with, especially if you're trying to entertain your kids. R2-D2 and the GNK droid are particularly impressive in terms of the various behaviors you can have them perform. The builds aren't too difficult, so long as you pay attention to the wiring and positioning of the main module. I just wish the module had it's own speakers instead of relying on the app to make the droid noises. There are a lot of activities to do within the app that you have to unlock, which may be a turn off to some; but it does force you to somewhat understand the different features you're able to perform with each droid.