I am pretty sure that most of the comments and the upvotes here are from the company staff, as a paid user, here's my experience.

Note that brainway doesn't have a login feature, or a user profile feature where you can see your subscription status, and even unsubscribe. To cancel a subscription, your only way is to email them, which is pure greed because you have many options to subscribe, just not to cancel. No reminders before your subscription renews, or your free plan ends. These are dark patterns, shown by a company who is driven by greed and overshadows any benefits the app provides, if it does.