If you hit the brakes while driving a car you'll know roughly when and where it is going to stop before it does. You're not measuring momentum, you're measuring rate of change of momentum and predicting future speed from it. Same with price.

TIMM is completely scam free. They aren't making any money from it, at least not yet. Later on it will have subscription services. I chat to the developers daily on discord, a good bunch of people. Note that it's definitely not a finished product yet.