To start using Cool Tabs, you don't need to download any app. Just go to www.cool-tabs.com and register.
You can register and test the platform without any payment.
If you are going to launch real campaigns, you will need to sign up for one of the platform's plans. We also give you 7 days free to try any of our plans, in its free trial version.
From your profile, in the section 'Your plan', you will be able to pay your plan or activate the trial period.