Carb Manager has a basic version that is 100% free, and always will be. There is never any cost to use the  Carb Manager free version.

We do offer a Premium plan, which costs USD $8.49/month, $16.49/quarter, or $39.99 for a full year. Users on the free plan can and will see prompts in the app that encourage them to upgrade to the paid Premium plan, but that's always optional. 

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