Lark vs Tuta Calendar

Lark brings workplace communication and collaboration tools together in one platform, including chat, calendars, document creation and cloud storage. In video meetings, participants can edit shared Docs in the call window. Starter includes unlimited real-time translation, while AnyCross provides drag-and-drop workflow automation and integrations, including ready-to-use solutions. The App Directory lists third-party tools for areas such as collaboration, recruitment, expense control, CRM and ERP. Developers can use the Open Platform to build custom bots, web apps and blocks, with more than 2,500 APIs available. Lark supports web, Windows, macOS, Linux, iOS and Android. Starter is limited to 20 users, 100 GB of storage and one-on-one video meetings; its listed allowances also include 18 months of message history and 1,000 automations per month. Basic, Pro and Enterprise list higher user, storage, meeting or automation allowances. The maker describes Starter as intended for small teams with simple communication needs and Enterprise for large companies needing advanced security and organizational management. A free plan is listed.

Tuta Calendar organizes appointments, business meetings, and repeating tasks across Android, iOS, Linux, macOS, web, and Windows. It supports shared calendars with read-only, read-and-write, or write-and-manage-sharing access. Calendar events, invitations, sharing, and push reminders are described as end-to-end encrypted. Users can send and receive invitations, including password-protected encrypted invitations to external users. Imported calendars sync automatically across devices, while the listed calendar sync type is one-way. Tuta says reminders are hidden from the phone operating system and can arrive offline. The calendar is integrated with Tuta email and contacts. Security features include two-factor authentication; Tuta also describes its clients as open source and its calendar as using zero-knowledge architecture. The Free plan includes one calendar. Revolutionary costs €3 a month, billed monthly, and Legend costs €8 a month, billed monthly; both include unlimited calendars. Tuta is made by Tutao GmbH, based in Hannover, Germany, and founded in 2011.