When comparing MindNode vs Checkvist, the Slant community recommends Checkvist for most people. In the question“What are the best mind mapping apps with nested hierarchies?” Checkvist is ranked 3rd while MindNode is ranked 5th.
Ranked in these QuestionsQuestion Ranking
Pro Sync support via iCloud and Dropbox
Pro Mobile support
In addition to an OS X client, an iPhone and iPad versions are available as well.
Pro Trial version available
Pro Simple, zen-like UI
Pro Can automatically format layout
Allowing you to focus on content, instead of how it's organized, and especially useful when huge mindmaps get out of hand, the Smart Layout function will organize the mindmap in a way that's more comprehensible.
Pro Can export projects as PDF for sharing
Pro Tasks can be managed with custom tags
Pro vim-like commands
Pro Convenient search by text or tag filtering
Pro Converts incoming emails to todos - this is a way to enter tasks from anywhere.
Pro Great search
Search filters help you search for tasks by tag, due date, assignee, etc.
Pro Very flexible
To-do lists often need to be grouped and regrouped for clarity. The outline-based nature of Checkvist makes it easy to move things across categories, to increase and decrease priority, etc.
Pro Generous set of free features
Checkvist offers many free features if you are using this individually.
Pro Smart parsing of items
Parses markdown, html links, hashtags to become formatted text, clickable links, and tags, respectively.
Pro Supports comments on tasks
Any item can have a free-text comment, which can be shown or hidden as desired.
Con No Windows or Linux support
Con Limited capability in the android app
Checkvist is primarily a web interface.