In recent times the developer has been showing some serious miscommunication and other issues regarding their apps. Just look at their terrible handling of the vulnerabilities found in their file manager's pdf reader (See his responses to the report)

Since around that time, I've been looking for alternatives to their apps, but I've kept using some of them because I couldn't find anything that feels as good to use. I guess now I'm forced to really look for those alternatives, or see if there's any serious fork that still gets actively maintained weeks from now.