Too many ads, OVERRATED, may have viruses. And what do you mean the devs reply with the same words to 90% of every person that had a bad experience? please avoid this app and use your built in pdf manager, or use something more known and safer
Developer reply
Hello, thank you for your feedback regarding the ad experience! As a free app, ad revenue helps us continue providing our core services. However, we are committed to optimizing ad frequency and striving to strike a balance between user experience and operational needs.