Using the time-tested technique of repetitive Drilling by going back and forth, asking a question and providing the answer, and then quickly moving on to the next question, and the technique of Quizzing, by asking a question, waiting for an answer and providing feedback immediately after that, this Alexa skill will help you memorize the most basic facts about the US Constitution, focusing on the constitutional amendments.
The skill comes for free for the first 10 questions.
Why the subscription? Because the point of the skill is for you to memorize. If you memorize your facts quickly, then you can cancel the subscription. If you need more time to train, them keep it until you have accomplished your goal of complete memorization.
More Drill skills are available here: https://witlingo.com/drillskills/