The user interface is very easy to use when learning how it works! It's one that I would recommend for beginners who are just getting started in agronomy or even experienced users looking at new ways to improve their model(s). Nothing really bad about this product but if there was something you'd like changed/added please let us know so we can add those features into future releases as well (or maybe already have them!). We've been able to make some great improvements using these models by being more specific with our inputs within each field.