VSTSABest is built to work fully offline for engineering, teaching, and technical documentation. This policy explains what limited information we handle and how we protect it.
VSTSABest does not collect your calculation inputs or results for analytics or advertising. By default, your engineering work lives locally on your device.
VSTSABest stores calculation inputs, results, history entries, and favorites locally on your device. This data is used solely to power app features such as history recall, favorites, and offline‑first usage. We do not receive this data unless you explicitly choose to share it with us (for example, when sending screenshots or diagnostic logs via email).
VSTSABest is sold as a one‑time purchase. It does not embed third‑party advertising SDKs, cross‑app trackers, or behavioral analytics aimed at profiling your usage for marketing.
If you contact us for support, you may choose to share log files, screenshots, or sample data to help reproduce a problem. We encourage you to remove sensitive or confidential information before sending such materials.
Any diagnostic information we receive is used only for debugging, improving the reliability of VSTSABest, and responding to your support request. We do not sell or share this information with advertisers.
When you acquire VSTSABest from an official app store (such as the Apple App Store or Google Play), those platforms may collect their own analytics, diagnostic information, and purchase data under their respective privacy policies. We do not control how platform providers process this information.
Because VSTSABest is designed to be offline‑first, your engineering data typically never leaves your device. We recommend that you:
Because we do not maintain a cloud account for your use of VSTSABest, common data subject rights (access, correction, deletion) primarily apply to information you may have shared directly with us via support channels.
If you have sent us diagnostic logs, feedback, or emails that include personal information and you would like them deleted or corrected, please contact us at [email protected] from the email address you used originally.
VSTSABest is intended for professional engineers, technicians, and students in higher or technical education. It is not targeted at children under the age defined by local law, and we do not knowingly collect personal data from children.
We may update this Privacy Policy from time to time to reflect product changes, legal requirements, or best practices. When we do, we will update the "Last updated" date at the top of this page. Please review it periodically to stay informed.
For privacy‑related questions, complaints, or requests, you can reach us at:
Email (privacy): [email protected]
Email (general support): [email protected]