Carbon - Calendar Mirror

Copy events between calendars

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Keep work and personal calendars from colliding. Copy events one way - in full, or as a "Busy" block that reveals nothing. Pay once, no subscription. Carbon copies events from one calendar to another, so time blocked in one shows up in the other. Point it at a source calendar and a destination, choose what to copy, and Carbon keeps the destination in step. One way, always Carbon copies from a source calendar to a destination. It never writes back to the source. Your work calendar stays exactly as your employer's system left it. Choose what crosses over Copy full event details, or copy only a "Busy" placeholder that reserves the time without revealing the title, location, or notes. Set this per mirror, so a sensitive work calendar and a shared family calendar can be handled differently. See it before it happens Every new mirror shows you a preview of exactly what will be created before anything is written to your calendar. It won't touch what you've touched Carbon only ever changes events it created. Edit one of its copies yourself and Carbon steps back and leaves it alone - permanently. Undo any sync Sync history shows your recent runs. Reverse any one of them and the events it created are removed. Filters that keep the noise out Skip all-day events, skip invitations you declined, skip anything shorter than a set length, or exclude events whose titles contain particular words. Two years ahead if you want it Choose how far each mirror reaches - up to two years ahead and a year back. Keep the window narrow for quicker syncs, or open it up so next year is already blocked out. Everything stays on your device No account. No server. No analytics. Carbon has no way to send your calendar anywhere. The only thing it ever sends is your purchase, to Apple. Free for 30 days, then pay once Try every feature for 30 days. After that, one purchase and Carbon is yours. No subscription, no renewals, nothing to cancel. If you decide not to buy, Carbon stops syncing and leaves every event it copied exactly where it is - nothing is deleted, and you can remove the copies yourself whenever you like. When Carbon syncs Carbon syncs when you open it, and periodically in the background when iOS allows. iOS decides how often background refresh happens, and it can be infrequent. For syncs on a schedule you control, add Carbon's "Sync Calendars" action to a Shortcuts automation - Carbon walks you through it. A note on invitations iOS does not allow apps to add attendees to an event, so copies are standalone events without invitees. This is an iOS limitation, not a Carbon one. A note on work calendars Some employers restrict copying work calendar data to personal accounts, and managed accounts may block access entirely. Check your organization's policy.

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Bug fixes: - A copy you delete stays deleted, instead of coming back on the next sync. - Restore Deleted Copies, in a mirror's settings, brings those copies back. - Changing a mirror's destination now moves its copies to the new calendar. - A deletion is no longer lost when its event is rescheduled. - Two mirrors can no longer sync over each other. - Sync history no longer grows without limit.

Version 1.2

The developer, BMP Research LLC, 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • BMP Research LLC
    Size
    • 2.1 MB
    Category
    • Productivity
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • iPad
      Requires iPadOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 BMP Research LLC
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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