To start with something off-topic: Apple’s App Store gives no information to indicate the price of apps. Only after downloading it becomes clear what the price is.
I haven’t tried this app because the trial requires subscribing with a monthly fee that kicks in after a few days and is automatically renewed forever, and that is something I do not want to commit to.
It seems that every app nowadays expects between €6,- and €15,- monthly, which I find outrageously expensive.
For an app like this I would be willing to pay maybe €6,- one time, not every month