Product support

Data Cheese

Tell us the product, device and OS version, the steps that led to the issue, and a screenshot without sensitive information. We will start by reproducing the problem.

support@yunfanlabs.com

If no email app opens, copy the address and send from your preferred email service.

01 / Help us help faster

  1. 01

    Name the environment

    Product, device model, OS version, and app version.

  2. 02

    List the steps

    What you did, what you expected, and what happened instead.

  3. 03

    Protect your privacy

    Remove names, locations, account details, and other sensitive content before sending.

02 / What it is for

Built around one clear, recurring problem.

A local-first study tool for CDGA preparation and data governance learning, combining question practice, knowledge cards, review, mock exams, and a grounded AI tutor.

  • System: iPhone and iPad · iOS 17.0+
  • Local question bank and knowledge cards
  • Mistake review and mock exams
  • Source-grounded study assistant
  • Product privacy: No account or ads; progress and preferences are primarily stored locally.

Important:

Independent study tool; not an official examination or certification provider.