Analysis of information sources in references of the Wikipedia article "Altium" in Korean language version.
No, there is no licensing to worry about, and no subscription to maintain. The original version of CircuitMaker (latest edition was CircuitMaker200) always came with a free version targeted towards the educational market. The current version of CircuitMaker is totally free, giving you all the tools to think big and make cool stuff, with features and functionality to facilitate creation of diverse and challenging designs.