You can change your monthly or quarterly subscription (billing plan) to an annual plan at any time.

To make this change, follow the instructions below based on where you made your purchase. 

Note: Your new subscription duration and rate will take effect at the end of your current billing cycle. 

  • For iOS/iTunes App Store purchases:
  • Google Play purchases: First, cancel your subscription, then sign up for the annual subscription at the end of your billing cycle. You can cancel your subscription here:
  • If you signed up on the Carb Manager Website ( First, cancel your subscription following the three steps below, and then resubscribe when your subscription ends.
  1. Log into our web site at 
  2. In the left menu, select Settings
  3. Find and select the Manage Subscription button.

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Canceling a Carb Manager Premium Subscription / Turning Off Auto-renewal
I forgot how I subscribed. Can you help me figure out how to cancel?

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