You’ll never regret this
I’ve been looking for an app that is FREE and offers good and scientific examples of workouts. It tells you how to do it visually and verbally, actually, adding on to that, red shadows appear on every muscle your working out in every exercise. The best part about this app is all you need is yourself, no need for tools, no need for a gym. This app offers a very good age range of 13+. Lastly, they offer a lot of songs that you can put while exercising and it’s all for FREE.