Things vs Nirvana : Which is Better?

Things

Things is a delightful and easy to use task manager. Developed by Cultured Code

License: Commercial

Apps available for Mac OS X iPhone iPad Apple Watch

Nirvana is a cloud-based task manager that isn’t just about doing more.

License: Freemium

Apps available for Online Android iPhone Android Tablet iPad

Feature	Things	Nirvana
Convert Email to Task
Project Dashboard
Subtasks
Things is polished almost to perfection
Task Management
Task tracking
To-Do management
Todos
Gantt-charts
Team Collaboration
Custom templates
Kanban boards
Checklists
Content Filtering
Alexa integration
Dropbox integration
Favorites
Gamification
Hierarchical structure
Infinite hierarchical depth
Export to OPML
Notetaking
Support for Keyboard Shortcuts
Clean design
Full text search
IFTTT integration
Gmail integration
Google Calendar integration
Recurring tasks
Calendar view
Calendar integration
Customizable Themes
Customizable
Emacs integration
Web-Based
Command line interface
Periodic reminders
Built-in Calendar
Night mode/Dark Theme
Collaborative
GTD-based
Real time collaboration
Cloud sync
MarkDown support
Search by tags
Protected by Password
Dependency Tracking
gmail.
Support for Kanban Boards
Double Donut Chart
Self-hosted in intranet or private cloud
To do lists