Lark vs UCals
Lark
larksuite.comUCals
ucals.comSide by side
| Figure | Lark | UCals |
|---|---|---|
| Price from | $6/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Plans published | 8 | 3 |
| Spec score · Calendar apps | 9.4 (#2) | 8.1 (#88) |
| Free plan | Yes | No |
| Supported platforms | web,Windows,macOS,Linux,iOS,Android | UCals says it is available for Mac and Windows, while iOS and Android are in active development. |
| Product | Lark combines workplace communication and collaboration tools, including chat, calendar, document creation, and cloud storage, in one platform. | UCals is an AI calendar assistant that manages schedules through natural language conversation. |
| Security | Lark says it uses industry-standard encryption and continuous system monitoring, and that employees do not have access to user data by default. | UCals says it uses OAuth 2.0, does not store calendar passwords, and encrypts data in transit and at rest. |
| Support | Lark’s customer terms list help-desk email support on weekdays, 9:00 a.m.–6:00 p.m. Singapore Time, with an intended initial response within one business day. | The plan includes priority support, and the founders say they answer support emails themselves. |
Plans
Lark
- Lark Base StarterFree
- StarterFree
- StarterFree
- Basic$6 a month
- Lark Base Pro$8 a month
- Pro$12 a month
- EnterprisePriced on request
- Lark Base EnterprisePriced on request
In their own words
Lark
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.
UCals
UCals is an AI calendar assistant that manages schedules through natural-language conversation. One instruction can make multiple calendar changes, and later messages can use earlier conversational context. Its plan covers 11 life categories, including work, meals, exercise, and travel. Two-way synchronization is available with Google Calendar, Apple Calendar, and Microsoft Outlook. Tools include conflict detection, travel-time calculation, multi-currency cost tracking, location intelligence, learned preferences, and linked events. UCals displays before-and-after details for changes, and saying “undo” reverts the last change. Its MCP server connects calendars to Claude Desktop, ChatGPT, Cursor, and other compatible assistants. Platforms listed are Android, iOS, macOS, Windows, and an API. UCals says it uses OAuth 2.0, does not store calendar passwords, encrypts data in transit and at rest, and does not sell, share, or train on calendar data. ICS export and priority support are included. A 14-day trial is offered. The Single plan costs $15 a month, billed monthly.