Who it is for
People managing personal and shared lists who want reminders and calendar views in the same app.
Task manager with reminders and calendar views
Overview
TickTick is a to do and task application that keeps items in sync across devices through the cloud. It covers scheduled agendas, quick notes, shared lists such as shopping, collaboration with a team, habit building, and countdowns to dates like birthdays and anniversaries.
Features listed in the record include cross device sync, multiple reminders on a single item, several calendar views, integration with a separate calendar application, flexible recurring tasks, and countdown tracking. Appest Inc publishes it. The entry describes the product itself and does not spell out which of these actions are reachable from ChatGPT, so the line between the app and the connector is left open.
People managing personal and shared lists who want reminders and calendar views in the same app.
Countdowns to dated events sit alongside ordinary tasks, which is less common in list style task managers.
Availability
TickTick:To-Do List & Calendar is listed in the ChatGPT apps directory only. Appest Inc has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
Same company
Search, create and manage TickTick tasks and habits
Claude
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This is an independent catalogue entry compiled by Node8 from TickTick:To-Do List & Calendar's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Appest Inc, and inclusion here is not an endorsement.
Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot.