Beyond the information Apple provides to developers (provided you opt-in), Mastermind Logic itself collects no information about you and refrains from logging how it is used. No personal information such as your name, email address, phone number, or location is collected.
All of your app settings and game progress are stored on your device. If you choose to connect with Game Center, gameplay information will be sent to Apple. This information may also be stored in iCloud so that the data syncs to your other iOS/macOS devices.
By using my website or app, you consent to this privacy policy. Should you have any questions, you can contact me at mastermind@thanel.me.