When comparing Casual vs Nozbe, the Slant community recommends Nozbe for most people. In the question“What are the best cross-platform task apps?” Nozbe is ranked 35th while Casual is ranked 67th. 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 Tracks task dependencies using a graph
Pro Great to-do templates
Every to-do list & project can be saved as an amazing template that you can re-use in the future.
Pro Offers a high-level overview of projects
The workflow with dependencies shows where the things are at a glance. No more frustrations of how your project is going and who is doing what.
Pro Sync deadlines to Google Calendar
To-do items can be integrated with your day-to-day schedule using Google Calendar.
Pro Visual way of organizing your work
The workflow includes dependencies and shows you where things are at a glance.
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
Cons
Con Price
At its cheapest level, Casual is $9 per month for two users and two GB of storage. The trial period is short and there is no free version.
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.