Zenni offers more affordable prices than Warby Parker. However, Warby Parker has physical stores and also stocks contact lenses. Zenni also sells frames for children whereas Warby Parker does not. Zenni has a very positive online reputation, with many customers claiming the frames and lenses are of good quality. In contrast, Warby Parker has a more mixed reputation, according to online reviews. Learn more about how Warby Parker and Zenni Optical compare.