Custom report module on development and production system

I currently use one machine (my laptop) for development and and then copy the database to the restaurant machine together with any new feature.

I feel the custom reports and probably the database tools modules would be useful and was wondering how the licencing works. In particular, whether I would need to buy two copies i.e. one for each machine.

Thanks to anyone who can give me some guidance on this.

I hope that answers your question.