Privacy Policy — Quantum Horizon
Last updated: July 29, 2026
This Privacy Policy describes how Quantum Horizon (“the App”) handles information. It applies to the iOS application available on the App Store.
Overview — data collection
Quantum Horizon does not require an account and does not sell personal information. Physics simulations, theme choices, age/settings preferences, and measurement history you create are processed and stored on your device (app sandbox / local preferences). The App is not fully offline: it may use the network for optional quantum-entropy sampling and for advertising via Unity Ads. Those services process technical data as described below.
Information we use
- On-device physics & settings: relativity and quantum calculations, hub video preferences, unlocked themes, and similar preferences stay on your device. They are not uploaded to our servers as content.
- Measurement labels & history: text you enter for wave-function or branching outcomes, and a short local log of collapses, remain on-device unless you choose to share a card yourself.
- Photos (optional): if you save a cosmic result card, the App may write an image to your photo library using Apple’s Photos APIs. We do not upload your photo library to our servers.
- Optional network entropy: when you run a quantum measurement, the App may request a random octet from a public quantum random number service (ANU QRNG) to collapse the state. If that request fails, the App falls back to on-device cryptographic randomness. The request does not include your personal content labels as analytics payloads.
- Advertising ID (App Tracking Transparency): on launch, iOS may ask whether to allow tracking. If you allow it, Unity may use the advertising identifier to deliver more relevant ads. If you deny tracking, ads may still appear in a limited / non-personalized form where allowed.
Advertising — Unity Ads
The App uses Unity Ads for a full-screen interstitial that may appear after you open your first tool in a session (not immediately on cold launch). Ad requests may collect device and usage data as described in Unity’s Privacy Policy.
On-device processing
Relativity formulas, gravitational lensing visuals, spacetime atelier simulations, and most UI state run locally on your iPhone. Educational visualizations are not mission-planning tools and do not require an account.
Data sharing
We do not sell personal information. Service providers such as Apple and Unity (Unity Ads) may process technical data needed to run the App and show ads. Optional QRNG requests go to the third-party entropy service only for a random byte.
Children
The App is not directed at children under 13.
Your choices
- You can deny App Tracking Transparency; the App remains usable and ads may still show in a limited form.
- You can deny Photos access; sharing to the camera roll will be limited.
- You can use the App offline for most instruments; network entropy and ads may be unavailable.
- You can delete the App to remove on-device Quantum Horizon data in the app sandbox.
Contact
Questions: Support