When comparing Blossom vs KanbanFlow, the Slant community recommends KanbanFlow for most people. In the question“What is the best task management software for small teams?” KanbanFlow is ranked 13th while Blossom is ranked 17th. The most important reason people chose KanbanFlow is:
The board space is very well used and configurable. User interactions are clear and intuitive.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Slack integration
An update is posted to the Slack channel every time a task is created, completed, moved, or commented upon.

Pro Simple & clean interface
Design focuses on clarity.

Pro Simple & easy interface
The board space is very well used and configurable. User interactions are clear and intuitive.
Pro WIP Limits
Pro Swimlanes
Pro Pomodoro timer
Pro Estimation & time spent

Pro Collaboration features
Any changes you make on the board are instantly available to all members of the team.
Cons
Con No free plan
There is no free plan like for personal use and the minimal cost of $19/month might be prohibitive.
Con Slack integration is really basic
There is no way to interact with tasks in any way - new tasks can't be added, completed tasks can't be removed, tasks can't be assigned, etc. The integration only sends updates to the Slack channel. There is also no way to fine-tune what updates get posted to Slack.
Con You cannot do a search on all boards, so if you have a lot of info on many boards, you have to search one at a time

Con No mobile app
There is a web app for mobile devices but it lacks some features that a native app could offer.
