Promo codes give you full access to SWIMTAG if you upload swims using your own device or manual upload without having to pay for a subscription or use a SWIMTAG wristband provided by the pool to create your account.
Your pool can provide you with a Promo Code which you can enter during the sign up process just above the 'Finish' button at the bottom of the page:
Or after signing up on the settings page under 'Register Membership' on the App or desktop website:
If you cannot see the boxes to enter a Promo Code your pool doesn't have a SWIMTAG system installed and therefore they do not have a Promo Code available to members. You can still create a free account and subscribe to a Premium SWIMTAG account on an individual basis if desired.