We understand that often times there is more than one person that takes care of your pool or hot tub. Because of this, we allow up to 3 users to a single account. To do this, you will need to have those "extra" users download the mobile app, using one of the links below and have them create an account.
Once they have created an account, you can send an email to support@crystalwatermonitor.com and ask them to add those users to your account. Make sure you include their email addresses in your email request.