When comparing Card Board vs Subtle tab, the Slant community recommends Subtle tab for most people. In the question“What are the best new tab extensions for Chrome?” Subtle tab is ranked 19th while Card Board is ranked 55th. The most important reason people chose Subtle tab is:
You can check current day events on every new-tab. It really makes it easy to keep track of events.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open source (MIT)
Source code can be accessed at https://github.com/dotlouis/cardboard
Pro Lots of widgets
The extension has cards for apps, bookmarks, quick settings, top sites, downloads, history, session and system.
Pro Can provide system information
The extension has a widget that displays CPU and memory usage as well as storage information.
Pro Google Now style layout
The extensions has a clean customizable card-based interface.
Pro Has Google calendar integration
You can check current day events on every new-tab. It really makes it easy to keep track of events.
Pro Syncs across browsers
All data from notes gets synced to a Chrome browser in your home device.
Pro Has a notes widget
Easy to create multiple notes list.
Pro Eye catching wallpapers
Wallpapers load extremely fast and it has various categories already sorted for wallpapers.
Pro 100% Free
No hidden charges. Cuztomisable wallpapers are enough forme
Pro Has Todo Widget with Todoist and Wunderlist Integrations
It's easy to track the tasks on phone and new tab due to integrations.
Cons
Con Limited customization options
While it's possible to choose which cards are displayed, there's no way to change the order of cards.
Con Not very customizable
More customizations features would help.