If you found a new problem to solve, sure! Normally we'll do something complete decoupled from the rest of your application. If you learn and validate what you though, we suggest to refactoring with your current stack.
#challengeAccepted! We love new challenges. Things that we already know that we couldn't figure out some hack: highly regulated sectors; technical focus products (ie. antivirus); IoT; VR / AR; and 3D Games.
Products and Hacks and Design Sprint are complementary. As you can see in this image, we have a different focus. We focus on build and help launch your product - it's like the "HOW" of your product. DS focus on understanding and put everybody at the same page - it's like the "WHAT" of your product.
Sure thing! We believe that a lot of folks want to try alone. No problem. We have how-tos (sorry, only in portuguese for now) explain every hack that we made. Feel free to contact us if you need any help.