What do you really get?
When debating whether to download this app I wondered what one really gets "off the shelf"; and what is only available under "In-App Purchases". For everyone also looking for this information: With the "free" version you can open and convert ONE file per week. If you need to use if for more files you need to purchase the "premium" version. FWIW it did successfully open and convert the one file I needed it for...