I love how well this works. From the preheat function, to how quickly it heats up to your desired temperature, and it doesn’t bubble out at all - and it’s simply beautiful.
The real test is whether it breaks after a year or two like every other kettle I've owned both name-brand and not. For this price I expect it needs to survive until I die; and if it does then it gets an extra star. That said, I have some picky design issues:
The kettle is small, which wouldn't be as much of an issue if it were easier to refill (see below)
The lid is very snug. This makes it a bother to return water after warming your mugs. Also, when it finally pops open it will spray drops of near-100° condensate around.
After a couple weeks I'm still not used to its "hold" behavior: you must explicitly click to turn off the kettle. Other kettles turn off after you lift from the base. That's obviously a limitation of how other kettles are made, but I think it's also better UX. Maybe I'll get used to Fellow's way.
I'm near sea level, but it still pumps excessive heat into the water when holding at 100°, even after calibration. That's an issue because all kettles are noisy when they run at full heat (but also because it's a waste of energy). It's got a microcontroller and PID algorithms, so I expect it to be smart enough to detect the cliff when energy goes to boiling rather than heating. You can work around this issue by lying about your altitude.
I wish the scheduler would remember the last time you used instead of starting you from 12:00am every time.
Heats up quickly! Instructions are a little vague and I do wish the app worked. Reviews were not good but I was hoping maybe it had been improved, evidently not.
To say that I am pleased with my new Fellow Corvo tea kettle would be an understatement. I absolutely love everything about it! I cannot wait to wake up and make tea! Both the functionality and the aesthetics are top notch. I’m thinking of moving it into the living room just so I can look at it all the time.