Privacy Policy

Last updated: May 23, 2026

This Privacy Policy describes how EigenSpace handles information when You use the Application.

Definitions

• Application refers to EigenSpace, the software program provided by the Company.
• Company referred to as either "the Company", "We", "Us" or "Our" refers to EigenSpace (Developer: Dr. Abhishek).
• Country refers to: Haryana, India.
• Device means any device that can access the Application, such as an Android mobile phone or tablet.
• Service refers to the Application.
• You means the individual using the Application.

Information We Do Not Collect

EigenSpace does not require You to create an account and does not ask You to provide Your name, phone number, email address, address, or other personal profile information to use the Application.

We do not use advertising SDKs, third-party analytics SDKs, or user tracking tools in the Application.

We do not collect, store, sell, or share Your personal data or simulation inputs/outputs on developer-owned servers.

Quantum Solver and Render Data

EigenSpace solves quantum mechanical systems and renders 3D point clouds and 2D cross-sections. All mathematical simulation, points sampling, and graphics rendering happen entirely locally on Your Device using Your local CPU and GPU processors.

• Your potential definitions, quantum numbers (n, l, m), basis settings, and coordinate modes remain local.
• No simulation coordinates, wavefunctions, or parameters are sent to external servers or developer-owned systems.

Local Calculation Cache

To make simulation loading, navigation, and rendering smoother, EigenSpace caches calculation outputs locally on Your Device.

• What is cached: Solver eigenvalues/eigenvectors, 3D point clouds, voxel density grids, and 2D plot coordinate slices.
• Data Security: All cached data is stored locally in Your Device's private cache directory. This data is isolated by the operating system and is not accessible by other apps.
• User Control: You can turn calculation caching on or off at any time, or clear all cached files immediately, through the Application's settings screen.
• Clearing the cache or uninstalling the Application deletes all locally cached simulation data.

Storage and Sharing of Exported Assets

The Application allows You to export 3D point cloud rotation videos (as MP4) and visualizer frame screenshots (as PNG).

• Temporary Storage: Exported MP4 videos and PNG screenshots are saved locally in a private cache directory on Your Device before being shared.
• Secure Sharing: When You choose to share an exported asset, the Application passes a temporary secure content URI using Android's standard FileProvider to the system share sheet.
• We do not upload or store Your exported videos or images on developer-owned servers.

Network Access

EigenSpace does not require an active internet connection to solve, render, or visualize quantum states. All core features function entirely offline.

The Application does not use network access to send Your simulation data, parameters, or settings to developer-owned servers.

Data Sharing

We do not sell, rent, or share Your personal data or simulation outputs with third parties.

Exported assets (such as MP4 videos and PNG screenshots) are shared only with the external applications or contacts You explicitly select when invoking the Android system share sheet.

Data Retention

We do not retain Your simulation configurations or generated files on developer-owned servers (as none are ever uploaded).

Local calculation caches and app settings remain on Your Device until You clear them in the Settings page, clear app data via Android system settings, or uninstall the Application.

Delete Your Data

You can completely delete all locally stored calculation caches and settings by:

• Using the "Clear Cache" button inside the Application's settings.
• Clearing the Application's storage/cache in Your Device's system settings.
• Uninstalling the Application.

Children's Privacy

EigenSpace does not knowingly collect personally identifiable information from children under the age of 13. Since no data is collected, stored, or transmitted by the Application, it does not pose a privacy risk to children.

Security

We take reasonable care to protect the information handled by the Application. Because all computations, caching, and rendering occur locally on Your Device without network transmission to developer servers, Your simulation data is secured by the Android operating system's application sandbox model.

Changes to this Privacy Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated "Last updated" date.

Contact Us

If You have any questions about this Privacy Policy, You can contact Us:

• By email: abi00779@gmail.com