OffloadProof

Store description excerpt

Make a verified two-destination copy of a card, external drive, or Files folder without uploading your media or trusting a copy progress bar alone. CHOOSE ONE SOURCE AND TWO DESTINATIONS Use Apple’s Files picker to select the source, Copy A, and Copy B. OffloadProof checks that the folders are distinct and not nested, confirms write access, checks reported capacity, and warns when both destinations appear to share one storage volume. COPY ATOMICALLY, THEN READ BACK Each regular file is hashed at the source, copied through a temporary file to Copy A, read back and verified, then copied and verified on Copy B. The source stays read-only. Existing mismatched destination files are never replaced automatically. PAUSE SAFELY AND SEE EVERY RESULT Progress is checkpointed after every fully verified file. Review the manifest, failed or mismatched entries, source and destination checksums, file counts, sizes, and completion time. EXPORT A RESULT YOU OWN Create a readable PDF verification report, a portable CSV table, and a SHA-256 manifest locally, then choose where to save or share them with Apple’s share sheet. LOCAL AND PRIVATE BY DESIGN No account, developer backend, cloud sync, ads, analytics, tracking, crash-reporting SDK, or external AI. A File Provider you select may use its own network service. OffloadProof does not send files to a developer server. ONE PAID DOWNLOAD No subscription, in-app purchase, external checkout, or paid feature gate inside the app. VERIFICATION BOUNDARY A completed report records that selected files matched at verification time. It is not a permanent backup guarantee, forensic certificate, or legal chain-of-custody record.

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