Creating good user interfaces is the name of the game when crafting projects and platforms that stick. But as much as we’ve studied this discipline, it’s still difficult to quantify exactly what parameters, appearances, and features work together to make a solid UI that people actually want to use.

Rather than studying general rules, for which there will always be exceptions, it’s often better to study existing products that have high rates or adoption and proof of staying power. One such example is Betterment, an automated advisor service for new and experienced investors. [Read more…]