The $100 USD is definitely hard to justify for most SaaS tools these days. But I gotta say Shift is one of the programs worthy of its price tag.
Our small team of 3 use Shift as a consolidating tool for all our email and app accounts. Keeps everything in one place without the need to login on all these different tabs on Chrome.
Can't really speak for the free version and the email only version, but the $99 tier subscription with the apps looks like to be the best bang for your buck.
I believe this is the Shift email application. Squirrel is a framework for updating C# and C++ Windows apps, so Shift may be using that to check for and apply updates. - Source: Reddit / 6 days ago
Do you know an article comparing Shift to other products?
Suggest a link to a post with product alternatives.