When comparing Nirvanahq vs Zenkit, the Slant community recommends Nirvanahq for most people. In the question“What are the best GTD apps?” Nirvanahq is ranked 3rd while Zenkit is ranked 5th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Solid project management
Pro Allows setting how much effort a task will take
You can set how long a task will take and how much effort will it ask of you on a scale of 1 to 3.
Pro Allows adding items via email
Pro Use start dates
A vital functionality in a GTD app.
Pro Beautiful interface
Clean, intuitive user interaction. The design is very thoughtful. Somehow it makes Things feel clunky, despite obvious similarities of all GTD platforms.
Pro Can email focus list
The app can send you the most important items for the day in an email.
Pro Allows to add postponed tasks
You can postpone a task. It helps not to clutter task lists up until you really need them.
Pro Beautiful interface
Clean, intuitive interface — both desktop and mobile. Lots of intelligent design thinking behind this. Somehow makes other GTD apps like Things feel clunky, despite similarities.
Pro Native support for Areas of Responsibility
Pro Powerful and simple to use tool with a clean design
Easy to use and easily understandable for everyone.
Pro Many important data views
Data views include Mind-Map, Kanban-Board, Spreadsheet, List, and Calendar. Views can be switched easily.
Pro Native apps
Native apps for iOS, Android, macOS, Windows, and Linux.
Cons
Con No way to add sub-projects
Con Does not integrate with other apps or services
Con No recur upon completion option
If you have a daily recurring task, it will recur every day regardless if it's been completed the prior day.
Con No attachments
Can't add any attachments to the tasks - no photos, no pdfs.
Con Limited features in the free version
Free version limited to 5 projects, 3 reference lists and 2 areas.
Con No desktop widget
Con No way to work with teams
This is a one-person solution, there is absolutely no ability to share projects with others.