That should be the "truth in marketing" label required for all app reviews. After reading a glowing review of the app "Files" in AppAdvice, I bought it and used it to ultimately store around a thousand files. A day or ago so it began to crash and would no longer open. An email to the developer finally resulted in a short and not so sweet reply saying the app was "no longer supported". So---my own app advice is to always back up your files and always read app reviews with a healthy amount of scepticism.