Privacy policy and legal pages for the Anti Noise iOS app.
Effective date: May 19, 2026 Last updated: May 19, 2026
Anti Noise (“we”, “us”, “our”) operates the Anti Noise iOS application (the “App”). This Privacy Policy explains what information we collect, how we use it, and the choices you have. By using the App you agree to this policy.
When you sign up with email + password or Sign in with Apple, we collect:
The App captures content you choose to save:
This content is stored locally on your device (SwiftData) and mirrored to our cloud database (Cloud Firestore) when you are signed in, so you can access it across your devices.
When you purchase a subscription, the App receives a receipt from Apple confirming entitlement. We do not receive your payment method, billing address, or full Apple ID. Apple charges you directly; we only see whether your subscription is active.
We collect anonymous app usage events (screens viewed, features used, capture counts, subscription events) and crash reports to improve the App. Diagnostic data is associated with a random installation identifier, not with your real identity.
The App does not ask for your phone number, location, contacts, calendars, or health data.
We use the information we collect to:
We do not use your content to train AI models. We do not sell your information to advertisers or data brokers.
The App uses OpenAI’s GPT-4o to generate Feynman-style summaries and flashcards. When you request a summary, the text content of the capture is sent to OpenAI’s API. OpenAI’s data handling is governed by OpenAI’s own privacy policy: https://openai.com/policies/privacy-policy.
In the current version, AI calls are made using an API key that you provide and that is stored only in your device Keychain. We do not retain or relay your captures through our servers in this configuration. A future update will route AI calls through our backend; this policy will be updated when that change ships.
We rely on the following third-party services to operate the App. Each receives only the information necessary to perform its function:
| Service | Purpose | Data received |
|---|---|---|
| Apple — Sign in with Apple, App Store | Authentication, in-app purchases | Email (relay or real), purchase receipt |
| Google Firebase — Authentication | Account sign-in | Email, display name |
| Google Cloud Firestore | Cloud database | Your captures, summaries, flashcards, account profile |
| Google Firebase Analytics | Anonymous usage analytics | Installation ID, event names, screen names |
| Google Firebase Crashlytics | Crash reporting | Crash stack traces, device model, OS version |
| OpenAI | AI summary + flashcard generation | Capture text content (only when you trigger a summary or flashcard) |
| RevenueCat | Subscription management | App User ID (random or your Firebase UID), purchase receipts |
Each provider stores data on their own infrastructure under their respective privacy policies. We do not control how these providers process data within their platforms.
Depending on your jurisdiction (GDPR, CCPA, Vietnam PDPL, etc.), you may have the right to:
To exercise these rights, contact us at the email below. We respond within 30 days.
Anti Noise is not directed at children under 13 (or the equivalent minimum age in your country). We do not knowingly collect data from children under that age. If you believe a child has provided data to us, contact us and we will delete it.
We use industry-standard measures to protect your information:
No system is perfectly secure. If you believe your account has been compromised, contact us immediately.
We are based in Vietnam. Your information may be processed in the United States or other countries where our service providers operate. By using the App, you consent to such transfers. Where required by law (e.g. GDPR), we rely on standard contractual clauses or equivalent safeguards offered by our providers.
We may update this policy from time to time. We will post the new version at this URL and update the “Last updated” date. Material changes will be announced inside the App. Continued use of the App after the change takes effect constitutes acceptance of the updated policy.
For privacy questions, data requests, or any other inquiries:
Email: support.gravita@gmail.com
We aim to respond within 5 business days.