When does my Snapchat data update?

Snapchat reports only offer a daily refresh, as conversions aren't included on their API for hourly refresh.

The Snapchat report that Polar has is a daily report, as Snapchat's API does not support conversions for hourly reports. For this data source only, it's only possible to have a daily refresh in Polar. You can read more on Snapchat's API page here.