scam
Response from developer
I'm sorry for the bad experience you had. The software has always been a paid download model in the Apple Store, and has never been free. It's just that from version 1.0.9 to version 1.1.0, the paid download model was switched to the in-app purchase + subscription model. In the middle, there may be free downloads due to the time difference between the online releases, but I have never done a free download activity, and I don't know where you got this activity. In addition, if you have paid downloads before and encounter charging issues after upgrading, please contact me as soon as possible. The contact information is in the software introduction.