When comparing Nozbe vs Nirvana, the Slant community recommends Nozbe for most people. In the question“What are the best cross-platform task apps?” Nozbe is ranked 35th while Nirvana is ranked 49th. The most important reason people chose Nozbe is:
With Nozbe you can manage and get your tasks done anytime and anywhere. Nozbe has apps for iOS, Android, Windows Phone, OS X, Windows, and Linux, as well as a universal web interface. The sync works smoothly and handles off-line work responsively – all the work saved on your device will be synced to the servers as soon as you’re back online.
Specs
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Pros
Pro Cross-platform
With Nozbe you can manage and get your tasks done anytime and anywhere. Nozbe has apps for iOS, Android, Windows Phone, OS X, Windows, and Linux, as well as a universal web interface. The sync works smoothly and handles off-line work responsively – all the work saved on your device will be synced to the servers as soon as you’re back online.
Pro Great real-time team collaboration features
Nozbe can be a perfect tool to manage communication, data, and workflow for teams – large and small. Features like comments, @mentions, admin/guest roles, attachments, and categories are great for managing all the documents and emails associated with a project. You can also invite people who don't have Nozbe account to participate in your projects.
Pro Nice and simple user interface
Nozbe is based on Getting Things Done (GTD), a productivity philosophy created by David Allen. However, you don't need to know the methodology to use the tool. You can just add projects, tasks, and attachments, and gradually learn to use the other features to organize your time even better.
Pro Practical integrations with some favorite tools
Nozbe integrates with email, Evernote, Dropbox, Google Drive, Box, Google Calendar, etc.
Pro Nozbe.HOW templates
Nozbe users curate a vast collection of free templates that share everything from favorite recipes to tried-and-true vacation itineraries.
Pro Highly intuitive and works the same way across all platforms
Pro Streamlined for Getting Things Done
Designed specifically for the Getting Things Done methodology as created by David Allen.
Pro One of only few faithful implementation of GTD approach
The Nirvana approach is one of the few that successfully encapsulates the spirit of Getting Things Done.
Pro Flexible structure for simple to complex usages and workflows
Pro Clean layout
It has a very simple, understated design.
Pro Useful history of actions
Nirvana offers a chronological look at completed tasks that is good for reporting and improving future estimations. That said, it could be improved by incorporating a true journal view rather than a simple list broken up by week.
Cons
Con Limited free plan
After the free trial you can choose to remain on a free plan, but you’ll be restricted to a max of 5 projects and will have limitations on collaboration.
Con Task dependencies missing
Nozbe is great, but one shortcoming relates to "task dependencies" in projects. You should be able to sequence your tasks so that, when you complete a task, the next one that needs to be done becomes the "priority" task for that project. This is a vital feature that will make the program dramatically more useful. The company claims to be working on this improvement.
Con No native OS X & Windows apps
There are currently no native apps for Windows or OS X, although the company has claimed to be working on them.
Con The Pro service tier still does not have common features
Common features such as notifications and sharing between applications aren't available, even in the Pro-tier. Its only native integration with other applications is adding tasks via a specialized email address generated for your account.