dCal — A local-first calendar
A local-first calendar
$14.99
A four-week view for plans that cross months. Unlimited, fully searchable notes on every day. No cloud, no account, no subscription — one purchase covers Mac and iPhone.
dCal is a planner you buy once. See plans that cross month boundaries in a four-week view, write unlimited notes on any day, and keep all of it on your Mac and iPhone — no cloud, no account, no subscription. One purchase covers both.
■ Truly local — proven, not just promised
dCal has no network connectivity. macOS App Sandbox denies the app any network entitlement, so it cannot reach any server technically. Perfect for confidential meetings, sensitive client schedules, or anyone who values their privacy.
■ See four weeks at a glance
The signature 3–6 week grid view shows long-running projects as continuous lines, never broken at month boundaries — something Apple Calendar can't do.
■ Notes, not just events
Each day cell can hold unlimited rich text — meeting minutes, work logs, family notes. Bold, italic, underline, color formatting. Full-text search across all your notes.
■ Windows hyCalendar compatible
Opens .cal files from hyCalendar (Windows freeware) byte-for-byte unchanged. Edit on Mac, save, and the file remains identical.
■ Japanese holidays built-in
Including substitute holidays and citizens' holidays. Computed from the official rules; no online lookup required. Valid 1980–2099.
■ Fast search
Find any keyword across day notes and period event titles, with the matches highlighted.
■ Jump to any date
Year scroller + 12-month grid. Two taps to reach any past date.
■ Mac + iPhone — sync your way
Use iCloud Drive, Dropbox, Google Drive, OneDrive — your choice. dCal itself never talks to those services; it just reads the file your sync client provides.
■ Plain text forever
No proprietary binary. Your .cal file remains human-readable. Even without dCal in 20 years, your data lives on.
■ Native Apple experience
Modern macOS / iOS design language. Glass materials, rounded cards, system fonts, Dark Mode.
Designed for:
• Lawyers, accountants, tax advisors with confidentiality obligations
• Doctors, therapists, anyone handling sensitive personal data
• Executives managing private meetings
• Privacy-conscious users
• Existing Windows hyCalendar users moving to Apple
• Anyone frustrated by Apple Calendar's monthly cut-off
Principles:
• No account required, no subscription
• No analytics, no tracking
• One-time purchase
• Your data is your data
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Search results no longer show formatting markers.
Searching a note with bold text or colour used to print the markup itself in the results — things like **heading** or [#FF6B6B]…[/#]. Results now read the way the note does.
A term was also missed when a marker sat inside it. A note written as "**weekly** review" now turns up under "weekly review".
Feedback and requests are welcome at info@dangkang.com.
The developer, interdisciplinary design lab., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- interdisciplinary design lab.
- Size
- 1.8 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 13.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 interdisciplinary design lab.
