Try the tool

Runs in this page. Your inputs are not uploaded or saved. Dates use your browser’s time zone.

Your result

Subtract seven calendar days for Free or 90 for Plus from the reference time. This illustrates the visible history window and does not delete anything.

A worked example

At October 9 at noon, seven calendar days earlier is October 2 at noon in the same time zone. Whether a particular record appears depends on the app's available records.

Visibility is not deletion

The Activity tier, local and cloud deletion, and photo retention are separate controls. An illustration is not evidence that a record exists or has been removed.

Keep the next check on your iPhone

Create the items manually in Is It Locked?. This browser draft does not transfer into the app. Check the items yourself, then record them.

Get the app free

iOS 27 or later. One place and one list are free.

The app records what you checked. It does not lock doors, switch off appliances, or verify their physical state.

Sources and review notes

Calculation conventions and boundary cases are documented above. The tool runs locally and is tested against arithmetic and calendar examples.