That's an app I was really waiting for. Until yesterday I used Shift, which I think is the market leader. I was already looking for a substitute, since shift recently shifted his price (I should have read this little clue of the naming...), and I used it mainly to connect my mail addresses in one spot.
Browser function wasn't so intuitive and I prefered to use usual chrome or crap safari. But I still prefer it to the similar app, because shift is still a great app.
Anyway, sidekick really kicks ass to all of them in different ways.
I have to compliment the great work behind this app, because it's clear that they have studied deeply the real use cases that helps to increase ease and productivity caring of many details that makes the difference.
For example, the task function integrated with te browser is really nice and effective as well as the focus function.
The performance of the app overall is amazing.
Team management excellent.
Great jobs and really thank you !