There is a 3rd alternative...
Atolia, the one and only workspace your team needs
Atolia is a power-packed all-in-one digital workplace: Chat, Video calls, Tasks & Projects, Calendars, Documents, Notes...
Accelerate your team's collaboration game.
Implement it in minutes and save money. Atolia is cheaper than most of the business instant messaging apps.
Why choose Monday or Flock?
In terms of features, Monday.com offers add-ons, roles management, graphic personalization, custom domain name, contact management, workspace and user activity, and online document editing. On the other hand, Flock offers chat, file sharing, mentions, polls, groups/channels, GIF and emoji, 1-1 video call, group video calls (up to 20), screen sharing, audio call, participant permissions, notes-taking, task management, "Do not disturb" mode, help resources, mobile app, web app, desktop app, integrations and API, SAML/SSO authentication, end-to-end encryption, and data and users import from Slack, Hipchat, or Stride.