I think an automatic subscription charge for a full year without a warning or ability to refund is bad consumer practice. It has the earmarks of a scam. Even Amazon subscriptions for $5 items give you a warning before they charge your account. The world building had some interesting features, but the usability was not intuitive. It also did not allow free subscribers in my writing group to look at my Timeline, so trying to use the paid version to share my work with others was not possible. Since that was the point of me getting the subscription, I found the app unhelpful.