Scam
Response from developer
Hi, 4stones, We guarantee that our application is formal and legal. We will uphold the principle of good faith, strictly abide by relevant laws and regulations, and will not deceive users. We are using the subscription feature provided by iOS. If you have a subscription, you can find it in your Apple ID Settings -> Subscriptions. If you no longer need our service, you can cancel it at any time. If it is not listed here, you are not subscribed to our app. Thank you for your understanding.