Support

We are here to help

Find quick answers, try basic fixes, or reach our team.
Typical response time is within one to two business days.
KarbCoach is a general wellness and education tool and does not provide medical advice or glucose measurements.

System Status: Test Mode

Contact

Email support@diamondstartech.com
Include as much detail as possible for faster help.

  • Device and operating system, for example iPhone or Pixel with version number
  • KarbCoach app version
  • Steps to reproduce the issue and any screenshots
  • Approximate time of the issue and your timezone

Troubleshooting steps to try

  • Update KarbCoach to the latest version
  • Toggle Airplane mode off and on to refresh the network
  • Log out, then log back in
  • iOS: Settings → KarbCoach → enable Photos and Camera if meal photos fail
  • Android: Settings → Apps → KarbCoach → Permissions → enable as needed
FAQs

Common questions

Subscriptions, CGM use, crashes, versions, sign in, billing, and general safety.

How do I cancel or manage my subscription?

Manage your subscription directly in the store where you purchased KarbCoach. Open the Apple App Store on iOS or Google Play on Android, go to your account Subscriptions, choose KarbCoach, then change your plan or cancel. Any billing changes and refunds follow the store policies.

Does KarbCoach require a CGM?

No. KarbCoach can be used without any glucose monitor. You can use meal photos, quick logging, and habit reflections on their own. If you already use a continuous glucose monitor, you can look at your CGM information together with what you see in KarbCoach and talk about both with your health care professional. KarbCoach does not read or interpret CGM data and does not replace medical tools.

The app crashed or froze

First update KarbCoach to the latest version. Toggle Airplane mode off and on, then force close and relaunch the app. Check photo and camera permissions if meal photos do not work. If the issue continues, email us with your device, operating system, app version, steps to reproduce, and screenshots if you have them.

How do I find my app version?

Open KarbCoach, go to Profile or Settings, then tap About. Please include the app version in your support email so we can help you more quickly.

Account and sign in issues

Confirm the sign in method you used when you first created your account, such as email, Apple, or Google. Check for typing errors and make sure you have a stable internet connection. If you still cannot sign in, contact support and include your device, operating system, and any error message that appears.

Billing looks out of sync with the app

After you change plans or renew, it may take a short time for everything to update. Make sure you are using the latest app version and are signed into the same Apple or Google account that you used to subscribe. Try logging out and back in to refresh your account state. If things still seem out of sync, contact support.

Is KarbCoach a medical app?

No. KarbCoach is intended for general wellness and education only. It uses non-clinical scores and approximate nutrition estimates to support reflection on meals and habits. It does not measure glucose, diagnose or treat any condition, or replace your health care professional. Always consult your health care professional for questions about your health, medications, or disease management.