When comparing Nirvana vs Informant, the Slant community recommends Informant for most people. In the question“What are the best cross-platform task apps?” Informant is ranked 38th while Nirvana is ranked 49th. The most important reason people chose Informant is:
Informant supports integration between the user's task list with their calendar.
Specs
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Pros
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.
Pro Integrates tasks with calendar
Informant supports integration between the user's task list with their calendar.
Pro Seamless syncing
Informant syncs seamlessly between mobile devices and PCs, so you can create an event or task anytime on your phone and it will appear on whichever computer you are using. One license includes all devices.
Pro Integrates notes with contacts, tasks and calendar
Cons
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.
Con Price
It’s too expensive.
