Credit Karma generally updates its users' credit scores on a weekly basis. The scores reflected in the Credit Karma application or website are based on data from TransUnion and Equifax, two major credit reporting agencies. However, it is important to note that while Credit Karma provides an updated score weekly, the credit scores from lenders may vary, as they may use different scoring models or data sources. Additionally, users should remember that their credit score can fluctuate due to various factors such as credit utilization, payment history, and new credit inquiries. To stay informed, users can regularly check their credit profile on Credit Karma, which is designed to help them manage their credit effectively. For the most accurate and timely information, it would be advisable to refer to the information available on the Credit Karma website or app.