Killendar review
A focused local calendar for Windows users who do not need sync or sharing.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Killendar is a native Windows calendar for personal and local use. It suits solo users and small setups that want appointments stored on the computer rather than in an account-based service. The Free plan includes month, week, day, work-week, and agenda views, along with recurring appointments, user-defined color categories, keyboard shortcuts, and iCalendar import and export. It runs on Windows 10 and 11 and is available as GPLv3 open-source software.
The strongest differentiator is local control. Killendar stores calendars in local .kcal SQLite files and does not require an account, subscription, synchronization service, or telemetry. Optional password encryption uses AES-256 encryption at rest through SQLCipher. Installation can be portable, per-user, or machine-wide, giving Windows users flexibility in how the desktop app is deployed. These features make it a practical fit for a private personal calendar, especially when local files and offline access matter more than cloud collaboration.
Its narrow platform and ecosystem scope define the trade-off. Killendar is desktop-only and Windows-only, with no calendar synchronization, shared calendars, scheduling links, mobile apps, or integrations. iCalendar import and export provide a way to move calendar information, but they do not replace ongoing synchronization across devices or services. Choose Killendar for a focused local calendar with encryption and straightforward views; choose an alternative if you need shared planning, phone access, connected calendars, or online scheduling.
Questions about Killendar
Does Killendar have a free plan? Yes, there is a free plan.
What does Killendar run on? Windows. It runs as a desktop app.
Who is Killendar built for? Solo users and small businesses (our editorial estimate).
Killendar pros and cons
- Where it wins
- Free open-source desktop calendar with no account or subscription
- Multiple calendar views, recurring appointments, and color categories
- Optional AES-256 encryption with local SQLite-based calendar files
- Where it doesn't
- No calendar synchronization
- No shared calendars or scheduling links
- No mobile apps or integrations
Killendar fact sheet, pricing and score →
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