> For the complete documentation index, see [llms.txt](https://docs.tryterra.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tryterra.co/faq/help-topics/data-api-sdk/data-model-fields-and-units/sync-timestamp-not-exposed.md).

# Is the device-to-phone sync timestamp in the payload?

Terra does not store or expose the exact timestamp at which a wearable synced to its companion phone app.

For event-driven (webhook-based) integrations, the closest signal is the **`last_webhook_update`** field on the user object, which indicates when the latest data sync to Terra occurred.


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