Legal

Privacy Policy

Last updated: April 2026 · Applies to: All MARS Studio apps

      The short version: By default, MARS Studio apps do not collect, store, or share personal information. Your data stays on your device. A few features are opt-in and disabled by default — when you explicitly enable them, they send limited, non-personal data (such as a watchlist symbol list or a push notification device token) to our servers. Each app's privacy page lists exactly what leaves your device for each feature.
    

1. Our Privacy Commitment

This policy applies to all apps published by MARS Studio on the Apple App Store. Every app we build follows the same core principles:

No account registration required
No personal information collected (name, email, location)
No analytics or tracking SDKs
No advertising or advertising identifiers (IDFA)
All data stored locally on your device using Apple's SwiftData framework

2. Data Storage

All app data is stored locally on your device by default. This data:

Does not leave your device to MARS Studio servers unless you explicitly enable an opt-in feature (see Section 4)
Is included in iCloud backup if you have it enabled (controlled by you in iOS Settings)
Optional iCloud Sync (where available) is user-toggled and uses Apple's CloudKit
Is deleted when you delete the app

3. Third-Party Services

Our apps fetch data from public APIs. These requests are made directly from your device and do not pass through MARS Studio servers. No personal data is included in any API request — only public identifiers (stock tickers, currency codes, property tax reference numbers, etc.).

For app-specific data source details, see the individual privacy policies:

HorizonMarketCompass Privacy → BharatPropVault Privacy → DhyanaMala Privacy → Compounder HQ Privacy →

4. Optional Opt-In Features

Some features require sending limited, non-personal data to MARS Studio servers. These features are always disabled by default and require explicit, one-time consent before any data leaves your device. You can turn them off at any time.

Cloud Alerts (Horizon Market Compass v2.4+) — When enabled, sends your Apple Push Notification service (APNs) device token and the list of symbols in your watchlist to our Cloudflare backend so we can deliver daily market-close notifications. We do not send your name, email, location, portfolio value, cost basis, holdings, trade history, or API keys. Full disclosure: Horizon Market Compass Privacy Policy, Section 5.

Share Links (Horizon Market Compass) — When you choose to share a portfolio view, the snapshot is uploaded to our Cloudflare storage for a time-limited window (1 hour to 90 days, then auto-deleted). No account or email is associated. Full disclosure: Horizon Market Compass Privacy Policy, Section 4.

Data sent via opt-in features is used only to deliver the feature. It is never sold, used for advertising, used for cross-app tracking, or shared with third parties.

5. Children's Privacy

MARS Studio apps do not knowingly collect information from children under 13. Our apps contain no features directed at children.

6. European Users (GDPR) & California Users (CCPA/CPRA)

Lawful basis (GDPR Art. 6). Where any of our apps process limited personal data (typically only via the opt-in features in Section 4), the lawful basis is your explicit consent (Art. 6(1)(a)), provided via the in-app consent screen. See the per-app privacy policies for the specific data flows and retention details.

Your rights. European users have the right to access, rectify, erase, restrict, port, and object to processing of any personal data we hold (GDPR Art. 15–22). California users have equivalent rights to know, delete, correct, and limit use under CCPA/CPRA. To exercise any of these rights, contact privacy@marsstudio.app or any per-app privacy address — we respond within 30 days.

We do not sell or share your personal information for cross-context behavioural advertising or any other purpose. There is no "Do Not Sell or Share My Personal Information" link because we have no sale or sharing flow to opt out of.

Supervisory authority. Where MARS Studio infrastructure is involved, the relevant servers are hosted on Cloudflare in the EU (Dublin region); the lead authority for cross-border issues is the Irish Data Protection Commission (dataprotection.ie). European users may always lodge a complaint with their own local data-protection authority.

MARS Studio is a small independent developer and has not appointed a Data Protection Officer or EU representative; the volume and nature of our data processing falls below the GDPR thresholds requiring either (Art. 27, Art. 37). Indian users have equivalent rights under the Digital Personal Data Protection Act 2023.

7. Changes to This Policy

Material changes will be reflected in the "Last updated" date above. Continued use of any MARS Studio app after changes constitutes acceptance of the updated policy.

8. Contact

Questions? Contact us at privacy@marsstudio.app