Subnet Calculator Privacy Policy
Subnet Calculator does not collect, track, transmit, or sell personal data.
Data collection
We collect no data. The app contains no analytics SDK, advertising SDK, tracking technology, account system, or developer-operated backend service.
IP addresses and calculations
IP addresses, prefixes, subnet masks, ranges, and calculation results entered or generated in the app remain on your device. They are not uploaded to us or shared with third parties.
Purchases and the 7-day trial
The optional 7-day trial, permanent unlock, and restore-purchase operations are handled by Apple's App Store through StoreKit. We do not receive your Apple Account credentials or payment details. Apple may provide aggregate sales reports that do not identify individual users. Apple's processing is governed by Apple's Privacy Policy.
Local device storage
The app may store purchase entitlement status and limited anti-tampering timing information locally on your device so it can determine trial access. This information is not transmitted to the developer. Deleting the app removes ordinary local app data; purchase eligibility and restoration are determined by Apple's verified transaction history.
Third parties, advertising, and children
The app has no advertising, social features, user-generated content, or third-party analytics. It is a general-purpose networking utility and does not knowingly collect information from children or adults.
Your privacy rights
Because we collect and retain no personal data, there is no personal data held by us to access, correct, export, or delete.
Changes
If the app's privacy practices change, this page will be updated before the change takes effect.
Contact
Questions about this policy can be sent to linfuci51@gmail.com.