What app/website/software do you think has a near perfect user experience?

This was a questions I came across in a job application and I can't stop thinking about because I wasn't sure what do say. I feel like as a designer its so much easier for me to find flaws in the user experience and I couldn't think of any I would describe as "near perfect." But I do think its valuable to think about what working in design just as much as what's not working. What apps would you say have a "near-perfect" or even just really solid user experience.