We're so glad you'd like to share Calm. Below we have included a few tips for you as the gift giver.
While Calm app can be downloaded for free on iOS and Android mobile devices, the gift certificate should be redeemed online at www.calm.com/redeem, not through the app. Gift certificates do not expire and can be redeemed anytime.
Once the certificate is redeemed online, the subscription is active and the recipient can then log into Calm with the same email address they used to redeem the code and they will have access to the premium content.
You can buy a gift certificate here.