Yes, you can. We suggest you use these devices for for timed and learning quizzes. Learn more about this.
The goal of The PM Exam Simulator™ is to simulate the real Exam, so that you can practice in an environment that is as close as possible to the actual experience. On the day of your real exam you will be required to take the exam sitting at a desk in the testing center using a "normal" computer. You won't be using a portable device then.
We therefore highly recommend that you use The PM Exam Simulator™ only on your laptop/desktop computer to get used to doing it "the right way".