Lack of Subscription Clarity
While the design could be better, this app is far more useful than Apple’s poorly thought out Files app and more reasonably priced than most comparable apps. While the app appears to offer a promotional first year subscription with a requirement to subscribe within seven days (and an actual countdown of the days), it appears it is not valid if you downloaded and used the free app more than once (no response from developer). If you can take the time to add a promotional countdown, you should take the time to explain when the promotion is or is not valid.