When comparing Casual vs MeisterTask, the Slant community recommends MeisterTask for most people. In the question“What are the best cross-platform task apps?” MeisterTask is ranked 31st while Casual is ranked 67th. The most important reason people chose MeisterTask is:
MeisterTask offers a free plan that includes unlimited tasks and projects, as well as two integrations of the user's choice.
Specs
Ranked in these QuestionsQuestion Ranking
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 Unlimited tasks and projects for free
MeisterTask offers a free plan that includes unlimited tasks and projects, as well as two integrations of the user's choice.
Pro Useful integrations
MeisterTask has integrations with Google Drive, Dropbox, Slack, GitHub, BitBucket, Zendesk, Zapier, and MindMeister. You can even get a personal URL to subscribe to your tasks, schedule, etc. via any calendar program that supports the iCal format (e.g. MacOS default calendar application, or maybe even Fantastical 2 on the same platform).
Pro Task Automations
MeisterTask offers “Section Actions” that help automate steps in your workflow and increase efficiency and consistency.
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 No Linux desktop application
Con Main view isn't compact enough
The main view isn't compact enough even when set to small font and compact view. Additionally, columns are not collapsible.
Con Subtasks are hidden inside the task
It can be hard to see the complete details of each task due to the nested interface.
Con No reminders
No native reminder events.
