I've used a few training platforms from Truecoach to TrainHeroic prior to returning back to Trainerize, as I like having everything in one place.

However, I feel that the Trainerize UI for the workouts is a severe let-down of such a great product in comparison (particularly against TrainHeroic). This is due to it looking quite bland due to the design and colours used, as well as it looking overwhelming when you need to input your reps/sets.

For reference what TrainHeroic does well well is that the program is simple, but sleek with an option to display it as bright/dark and it isn't overwhelming when you look at the overview of the exercises and the rep/set display.

I believe this could be the icing on the top for Trainerize if this UI was improved.