Privacy Policy — English Text to Speech
Effective date: 2026-07-29
App: English Text to Speech
Developer: Hyunjin Lee / OpenRun
Contact: master@gold-keyword.info
This Privacy Policy explains what data the English Text to Speech mobile app ("the App", "we") collects, why, and your choices. The App is intended for a global audience of English learners.
1. Summary
- No account or login required. We do not ask for your name, email, or password to use the App.
- The App sends the text you choose to convert to our backend to generate audio, used only to produce speech and cache results.
- We collect anonymous usage, diagnostics, and interaction data to keep the App stable and improve it (via Datadog and Google Analytics for Firebase).
- We do not sell your personal data.
- The current version shows no ads. If advertising is added later, this policy will be updated.
2. Data we collect
2.1 Content you provide
- Text content you convert to speech, sent to our backend (AWS) and Microsoft's Edge neural voice service to synthesize audio.
- Generated audio may be cached on our server in de-identified form (hashed) to speed up repeat requests. Cache entries expire automatically (~30 days).
- We do not use your submitted text to identify you or build a profile.
2.2 Usage & diagnostics (Datadog, Google Analytics for Firebase)
- App usage / interaction events: screens viewed, taps, feature usage, performance timings.
- Session Replay: recordings of on-screen interactions to diagnose UX and errors. All on-screen text is masked — including the text you convert — so recordings show layout and taps only, never readable content.
- Crash and error logs, including stack traces.
- Device & technical information: device model, OS version, app version, language, network metadata.
- IP address, used transiently for security and rate limiting.
We also use Google Analytics for Firebase to understand, in aggregate, which features people use:
- Product events: screens viewed, text added, playback started/finished, voice or speed changed. These carry counts and settings (such as a character count), never the text you converted.
- Automatically collected data: app instance identifier, device model, OS version, app version, country/language, first-open and session events.
- We do not send your name, email, or your text content to Google Analytics.
2.3 Data stored only on your device
- Recent conversion history and settings are stored locally and not uploaded. Clearing app data or uninstalling removes them.
2.4 Advertising identifiers
- The current version does not display ads or collect advertising identifiers.
- A future version may include ads (e.g., Google AdMob); this policy will be updated with consent choices (GDPR, Apple ATT) where applicable.
3. Why we use the data
- Provide the core text-to-speech feature.
- Improve performance via caching.
- Keep the App stable (crash diagnostics, performance monitoring).
- Understand feature usage to improve the product.
- Protect the service from abuse (rate limiting, security).
4. Third parties / processors
| Provider | Purpose | Data involved |
|---|
| Amazon Web Services (AWS) | Backend hosting & delivery | Text submitted, request metadata, IP |
| Microsoft (Edge TTS voices) | Speech synthesis | Text submitted |
| Datadog | Analytics, session replay, crash diagnostics | Usage/interaction, device info, logs |
| Google (Analytics for Firebase) | Aggregate product analytics & retention | Usage events, app instance ID, device/locale info |
| (Future) Google AdMob | Advertising | Ad identifiers (only if ads are enabled) |
5. Data retention
- Server audio cache: auto-expires (~30 days).
- Diagnostics/usage (Datadog): retained per Datadog settings, then deleted.
- Product analytics (Google Analytics for Firebase): event-level data is retained for up to 14 months, then deleted automatically.
- On-device data: kept until you clear app data or uninstall.
6. Your rights & choices
- On-device data: clear it anytime via device settings or by uninstalling.
- Access / deletion requests: contact master@gold-keyword.info; we respond as required by law (GDPR, CCPA).
7. Children
The App is not directed to children under 13 (or the equivalent minimum age in your region). We do not knowingly collect personal data from children.
8. International transfers
Your data may be processed in countries other than your own (e.g., the United States) where our providers operate, with appropriate safeguards where required.
9. Changes to this policy
We may update this policy. Material changes will be reflected here with a new effective date and, where required, notified in-app.
10. Contact & feedback