PubNub offers a generous free plan you can use forever for non-production applications. When you are ready to move your application to production and scale it to a larger audience, we offer two paid plans that are based on monthly active users (MAU) and/or usage (transactions) depending on your PubNub account type. There are no limits on concurrent connections, number of channels, or devices.
For more information, please visit our Pricing page or contact sales if you would like to speak with our representative.