HabitWare is a way to promote software adoption and sales without limiting trial duration nor features.

1. A HabitWare can be used freely and without limitation until the user develops a habit, meaning it is used regularly.
2. Once habitual usage pattern is detected, a HabitWare gradually degrade Quality of Service (QoS) over time, meaning that operations will fail more frequently.

Degrading QoS encourages the user to buy the software without forcing the user to break the habit.  If the user deviate too far from the habitual usage pattern (adjusted to account for drop in QoS), then QoS is increased gradually.

Disclaimer: This is a software adoption/sales scheme I came up with for my own yet-to-be-released product.  You are welcome to use the idea, but I have no evidence that the scheme works in reality, so use your own discretions.