Card Offloader: Media Backup

Checksum verified SD copies

Only for Mac

Free · In‑App Purchases

Mac

Verification is free, forever. Every file is re-read from the destination and compared — not just copied and hoped for. Copy a memory card to several drives at once, and get proof that every file arrived intact. Card Offloader reads the card once, writes to every destination in parallel, and then re-reads each file back from the destination to compare it against the checksum taken on the way in. If a file does not match, it is removed and the offload is marked failed. There is no yellow warning state: a copy is either verified or it is not. VERIFICATION IS FREE Not a paid tier, not a trial, not a "pro" feature. Every copy is verified, in every version of this app, forever. THE CARD IS NEVER WRITTEN TO Read-only at three separate levels: the macOS security-scoped bookmark is created read-only, source and destination are different types that cannot be mixed up, and an automated test fails the build if any write API appears anywhere near the source code path. VERIFIED AFTER THE CACHE IS FLUSHED, NOT BEFORE Most tools re-read a file immediately after writing it, which often means reading it back out of the drive's own volatile cache. Card Offloader flushes the device cache first, then re-reads. It takes longer. It is the difference between checking the disk and checking the memory in front of it. NOTHING IS EVER DELETED An interrupted offload leaves a folder marked "INCOMPLETE — DO NOT USE AS BACKUP" and everything that made it across, with the checksums taken while reading. Those files may be the only surviving copy of a card that just died. The app will not tidy them away for you. REPORTS THAT TRAVEL WITH THE FOOTAGE A PDF and a CSV are written inside the landing folder on every destination, listing every file, its size, its checksum and whether it was verified. The report also states what kind of verification each destination actually gave — a local disk and a remote server do not offer the same guarantee, and saying otherwise would be a lie. FREE - One destination - Full verification, always - PDF and CSV reports - Resume an interrupted offload - Warns you when a card has already been offloaded PRO — monthly or yearly subscription - Write to as many destinations as you like, in a single pass - SFTP destinations: copy straight to your own server - Queue several cards in sequence - ASC MHL manifests, the format post houses ask for - One subscription covers every Mac on your Apple ID ASC MHL Manifests are written to the ASC Media Hash List specification and validated against the reference implementation, including folder hashes and the chain file. They are what you hand over when someone else has to trust your copy. BUILT FOR macOS Native AppKit. No Electron, no web view. Universal binary for Apple silicon and Intel. Sandboxed and distributed through the Mac App Store. Requires macOS 13 or later. Subscription: - Title: Pro - 7 day free trial on the yearly plan, then yearly auto-renewable subscription. A monthly auto-renewable subscription is also available, without a free trial. - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms of use: https://cardoffloader.com/terms Privacy policy: https://cardoffloader.com/privacy

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The developer, SECURE PASSWORD MANAGER, 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
    SECURE PASSWORD MANAGER LTD
    Size
    1.8 MB
    Category
    Utilities
    Compatibility
    Requires macOS 13.0 or later.
    • Mac
      Requires macOS 13.0 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    • Card Offloader Pro — Yearly $89.99
    • Card Offloader Pro — Monthly $9.99
    • Learn More
    Copyright
    Copyright © 2026 Card Offloader
  • Privacy Policy

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