@Guest said in Qt long steep learning curve & expensive price!: why I need to pay money for Qt guys and Felgo?! This is absolute madness! this part caught my attention deeply. Those are companies providing a service that you may find interesting, and that may help you solve your problem(s) so why not? I'm planning to start my own -one man- company In that case, aren't you planning to be paid money? It looks like you'll be at the same level of Qt or Felgo right?