I honestly find the Netflix app on my Roku to be quite impressively reliable and intuitive. What springs to mind for you?
Napster, Winamp, VLC
Bofa Mobile app. Not the best but very predictable in what it does and how it does
Discord
Every company I have worked in has worse audio conferencing than discord’s audio. 2 hours of playing real-time games with no issues at all.
I’ve always felt like discord is a better slack than slack and a better audio zoom than zoom. They could make cash but they always ignore that market
Skype for Business is phenomenal.
Bitcoin as a concept was extremely impressive to me the first time I read the paper several years ago. It brought together many existing concepts in a novel way.
FaceTime - Simple UI and excellent video quality.
Spanner is the most impressive system I ever used.
Robinhood Android app
I actually find the Robinhood Android app lacking some basic drill down navigations.
If you have a lot of ticker symbols on your watch list, it will lag. I suspect they aren't doing real time updates very efficiently.