freemium

Offering basic services for free while charging a premium for advanced or special features.

When framing a business model within the consumer Internet space, we may hear about advertising-supported, freemium, subscription, or a hybrid model.

Regarding premium services, both the "freemium" model (free basic service with a premium service offered on a subscription basis) and the free trial model...

A product that is offered free of charge and supported by sales of a premium version.

Most consumer-level cloud offerings would be labeled a freemium, which is a free version that is supported by a paid, premium version.

A business model that relies on offering a free version and charging for a premium version.

So the only thing left would be using freemium as a means of gaining trial, with the potential to up-sell to a paid subscription.