in the free version, only 5 minutes of daily training is allowed. The price is not specified to buy the advanced version. When I select one of the plans (monthly, yearly and lifetime), the app stays in waiting mode and does not show any other messages or pages. It's easy to learn but it's not easy to upgrade to premium version. Even I can't use for 7 days free of premium version.I sent them an email but they didn't answer me too.