KIN vs Musubi
KIN
kincalendar.comMusubi
musubi.proSide by side
| Figure | KIN | Musubi |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 2 | 1 |
| Spec score · Family Calendar Apps | 7.7 (#24) | 8.1 (#12) |
| Spec score · Calendar apps | 7.5 (#164) | 8.6 (#37) |
| Calendar sync | none | two_way |
| Free plan | Yes | Yes |
| Headquarters | Redmond, Washington, United States | Brno, Czech Republic |
| Integrations | KIN does not currently import or sync Google Calendar, Apple Calendar, Outlook, or other external calendars. | Musubi connects to Google Calendar, Apple iCloud, Outlook and Microsoft 365, and compatible CalDAV services such as Nextcloud, Fastmail, and Radicale. |
| Mobile apps | ios and android | ios and android |
| Platforms | KIN is available on iPhone and Android; the product guide says it does not offer web, Mac, Windows, iPad, or Apple Watch apps. | The desktop web app and Android app are available; iOS is in beta through TestFlight. |
| Purpose | KIN is a shared family calendar for keeping household schedules in one place. | Musubi is a shared calendar for everyday life that brings calendars, tasks, and people together. |
| Shared calendars | Yes | Users can invite selected people to a shared calendar and grant view or edit access. |
Plans
In their own words
KIN
KIN is a shared family calendar for keeping household schedules together on Android and iOS. Family members can create or edit plans by holding to talk for voice input or by typing natural-language requests. The shared timeline combines events, reminders, to-dos, recurring plans, and assignments. People can filter the timeline by family member and apply privacy controls to individual events. KIN does not currently import or synchronize Google Calendar, Apple Calendar, Outlook, or other external calendars. Its privacy policy says voice and typed requests are sent to Cartesia for speech-to-text and Google Gemini for interpretation after in-app permission, with Groq and OpenAI listed as backup speech-to-text providers. KIN says it stores data with Supabase, uses reasonable security measures, and does not sell, trade, or rent personal data. It warns that speech recognition and AI interpretation can make mistakes, so users should check dates, times, recurrence, assignments, and reminders. The Free plan is listed at free, while future paid subscriptions or features may be introduced.
Musubi
Musubi is a shared calendar that combines calendars, tasks, and people for everyday planning. Events can appear in multiple calendars, with one update reflected wherever they are shown. It connects with Google Calendar, Apple iCloud, Outlook, Microsoft 365, and compatible CalDAV services including Nextcloud, Fastmail, and Radicale. Synchronization works both ways where provider permissions allow, while read-only calendars remain read-only. Views cover day, week, month, and agenda formats, and personal pages control which calendars and items appear. Tasks sit beside events with status, priority, due dates, and web list or Kanban views. Android and iOS apps provide mobile access; Android adds agenda and month widgets, with reminders scheduled on the device. Musubi is open source under the MIT License and can be self-hosted with Docker Compose v2, a domain, and HTTPS. Hosted Musubi costs nothing during early access. The hosted app and primary database run in Germany.