15 karma · joined June 20, 2014
Retroospect on a basic usage takes like 15 seconds to fill weekly and only tracks 5 basic data points, allows anonymity and produces charts, breakdown reports, etc... it's a more lightweight product, demands less from users and cost less - quite different kettle of fish.
In my experience teams tend to stop using products that demand too much after little time unless you enforce their use, although these tools are probably a better choice if you want in depth reports.
We use it in our small distributed team (Transparently) and it helps us figuring our when we have an issue worth discussing in depth.
You can anonymise it on larger teams and use it to figure out what actions may have made your team less happy, etc..