Actual customers say these subscription kits are engaging and fun to build, with clear instructions and videos that make assembly straightforward. Many appreciate the hands-on learning experience in coding and engineering concepts, noting quality materials and thoughtful design. Common feedback includes occasional issues with broken or missing parts upon arrival, though responsive customer service typically replaces items quickly. Some find the coding learning curve steep, while others praise the interactive hacking features. Delivery times vary, particularly internationally, but most subscribers report their children eagerly anticipate each monthly arrival.