Import photos in small batches you can actually verify

Choose a batch you can recognize

A huge selection is easy to make and difficult to audit. Start with a small group that you can inspect individually, such as several photos from one occasion plus a short video. There is no universal safe batch size: use a number you can comfortably compare without losing your place.

Identify the group in the source library before opening CalcLock. Apple Photos provides ways to sort and filter the library, including ordering by when items were taken or added. This can help you isolate a recent import without assuming it will appear in the same position in every app. Do not reorganize the entire library merely to prepare one batch.

Keep a minimal import record

Record a neutral batch label, the number of intended items, the date, and the destination collection you mean to use. If the subject matter is sensitive, avoid descriptive titles that reveal it. Do not put the secret equation in the same record. A checklist should help you verify work without becoming a new source of exposure.

Count photos and videos separately when that makes errors easier to find. Ten visible thumbnails may represent a mix of formats with different behavior. If you include edited copies or near-identical frames, identify them before import so you can tell an intentional pair from an accidental duplicate.

Check destination identity before selection

Open the intended vault with its exact expression and two consecutive equals presses. CalcLock has separate local vaults and no master directory, so verify that the collection you see is the one you intended. A correct import into the wrong collection can look like lost data when you reopen another vault.

Import your selected group and allow the action to complete. Avoid tapping the import action again solely because it is taking longer than expected. First inspect the destination for items already present. If an interruption occurred, compare against your record rather than immediately repeating the entire selection.

Verify and close the batch

Open each imported item, not just the first and last thumbnail. Look for readable detail in photos, and play representative portions of videos. Compare the actual items with the source group. A matching total is useful but insufficient: one repeated image and one missing image can still produce the expected count.

Mark the batch checked only when the intended items are present and usable. If something is missing, retry that specific item after confirming it still opens at its source. Keep a simple note of anything unresolved so the next session begins with a clear question rather than another full import.

• Confirm the collection.
• Compare item identity as well as count.
• Open the files that arrived.
• Retry only verified missing items.

Keep the ledger separate from a backup

A record of imported files is not a recoverable copy of those files. CalcLock has no export, backup, or restore. Preserve your originals independently even after the checklist is complete. The ledger helps you manage a local collection; it cannot rebuild one after a lost phone or forgotten equation.