How would you say this is different to eg the Garmin plans?

They take some inputs and give you a schedule. IME they aren't great at adapting to your needs - if the plan turns out to be too hard and youre overtraining, or it turns out you can't make your sessions (maybe too busy, maybe tkk tired) it just kept on throwing the same 4 workouts ar you, with the same parameters. They also require you to have a target time in mind, which you'll know if you're big into running - but not so if you're new (and need a structured plan like this!)

Is your approach different? Would be great if so!