Search Volume data remains valid for one month until updated by the Search volume sources. Yandex.Wordstat displays the data for 30 days before it expires.
The last database update date is displayed on the keyword research results page.
For your convenience, this date is also displayed on the Search volume tool pop‑up window next to Yandex.Wordstat. Hover over a icon to view the date.
The approximate expiration period for other sources is one month. The tool marks expired data as 'out‑of‑date' or invalid. If you run a Search Volume recheck, the tool will refresh the expired data and charge you for the search volume update.
To avoid unnecessary expenses and skip expired data, uncheck a box near Update expired data. To display the box, check a box near Skip checked Search Volume.