The app will always be free to download. However, to access content within the app, you will need to have signed up for/purchased a myDNA membership. To sign up, simply purchase a myDNA Personalized Wellness Kit and follow the instructions in your Kit.
Once in the app, ongoing meal plans, fitness plans, recipe/exercise exploring and home feed content require an active myDNA membership to access. You will receive 30 days free membership with your purchase of a myDNA Personalized Wellness Kit, after which you will need to have an active subscription to access these premium features. You can read more about subscription costs here.
Even if you cancel your membership or do not have an active subscription, you'll still receive your 30+ DNA insights. You will always be able to access them in the Insights section of myDNA Unlocked, regardless of your subscription status. However, you will not gain any new content or be able to access your personalized plans unless you resubscribe.