Why comparison tables need a checked-date column

A comparison table needs a checked-date column whenever any field can change before the reader acts.

Tool comparisons, price tables, policy matrices, model limit lists, visa requirement charts, shipping fee comparisons, and support-plan grids all create the same problem: rows look equally current even when they were checked at different times. A reader may compare a value from yesterday with a value from last quarter and never notice the mismatch.

A checked-date column does not make the table perfect. It makes freshness visible. If one row was checked today and another was checked months ago, the reader can decide which value needs rechecking. This is especially important when a table includes money, eligibility, deadlines, supported countries, API limits, or product names.

The checked date should belong to the field or row that changes, not only the page. A table updated for layout does not mean every price was reviewed. If a table has mixed volatility, use a note such as “prices checked June 25; feature names checked June 10.” That is more honest than a single generic update timestamp.

The column also improves correction work. When a value changes, the maintainer can see which rows are stale and which decisions used the old number. Without dates, every row becomes suspect, and the table becomes harder to trust even if most values are still correct.

The practical rule is: if a reader might act on a table value, show when that value was checked.

Why comparison tables need a checked-date column

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