When comparing Seed vs SquareOne, the Slant community recommends SquareOne for most people. In the question“What are the best e-mail clients for iOS?” SquareOne is ranked 14th while Seed is ranked 17th. The most important reason people chose SquareOne is:
Once incoming messages are grouped into zones, it's possible to mute certain zones so that they don't show push notifications.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Includes calendar information for added accounts
For each account added to the application Seed will attempt to pull associated calendars into the app as well allowing you to manage both mail and calendar events from one application.
Pro It's possible to get notified of only important messages
Once incoming messages are grouped into zones, it's possible to mute certain zones so that they don't show push notifications.
Pro Can automatically group incoming messages to help manage them
SquareOne allows setting up "zones" that will automatically pull incoming messages from set contacts. This allows you to focus on one group at a time. For example, a work group during work time and a friends and family group once you're home.
Cons
Con No way to delete emails in bulk
Emails have to be deleted one at a time.