Privacy Policy for Text to Speech Zen

Effective Date: April 2, 2026
Last Updated: July 22, 2026

Text to Speech Zen ("Zen", "we", "our", or "us") respects your privacy. This Privacy Policy explains what information is stored on your device, what information is processed by us and our service providers, how we use it, and the choices available to you when you use the Zen mobile application on iOS or Android.

1. Who We Are

Text to Speech Zen is operated from Ukraine.

Contact email: [email protected]

2. Service Overview

Zen provides text-to-speech, document reading, webpage extraction, scanning, AI voice, voice cloning, and related playback features. You do not create a traditional account with a name or email address. The app creates an anonymous or pseudonymous identifier so it can provide subscriptions, usage limits, service security, and analytics continuity.

3. Information Stored on Your Device

Your Zen document library is stored locally on your device. Depending on the features you use, local app data may include:

Text, phrase lists, document titles, imported file copies, and extracted document content.
Extracted webpage text, scanned text, and webpage image links.
Playback history, including titles and short text excerpts, playback progress, and preferences.
Locally cached audio generated for playback or export.
Voice-clone demo audio stored for playback on your device.

In the current app flow, Zen does not upload your original documents or scan images to its backend as a document library. Relevant extracted text is transmitted only when you choose a cloud feature described below. Local data remains on your device until you delete available items, clear an available cache, or remove the app, subject to your device and backup settings.

4. Information We Process

a) Cloud text-to-speech input

When you select a cloud-powered AI voice, the text you choose to narrate and the selected voice identifier are sent through our Supabase infrastructure to Inworld AI to generate speech.
We use that text to provide the requested narration. Our Supabase TTS request diagnostics do not intentionally store the raw text or generated audio. Generated audio is returned to Zen and may be cached locally.
Free voices provided by your device are processed by the applicable operating-system speech service and do not use our cloud TTS endpoint.

b) Webpage extraction

When you add a webpage link, Zen sends the URL directly from your device to Jina AI so readable webpage content can be extracted. Jina may receive the URL, IP address, and request metadata.
The extracted title, content, and image links are returned to Zen and saved in your local library. Extracted text may later be sent to Inworld if you select a cloud-powered AI voice.

c) Voice cloning

If you choose voice cloning, Zen sends the voice sample you provide, together with the selected language and any name or description you enter, through Supabase to Inworld AI.
Inworld processes the sample to create and host a persistent cloned voice and may retain the source recording as needed for that model under its terms. We store pseudonymous clone metadata in Supabase, including the provider voice identifier and resource name, display name, optional description, language, status, validation information, and timestamps.
We do not store the original voice sample or demo audio in our Supabase database. Demo and generated audio may be cached locally.
An unsaved draft may be discarded in Zen. To request deletion of a saved cloned voice, contact us as described in Section 12.
Submit only your own voice or a voice that you are legally authorized to clone.

d) Technical identifiers and device data

Depending on your platform, permissions, and provider configuration, this may include:

IP address, device type, operating-system version, and app version.
A Zen installation identifier and pseudonymous Supabase user ID.
AppsFlyer, Firebase, or similar app-instance identifiers.
IDFV on iOS.
IDFA on iOS only when available and permitted.
Google Advertising ID on Android when available and permitted.
Approximate location inferred from IP address.

e) Usage, diagnostics, and subscription information

Feature and interaction events, such as paywall views, imports, scans, screens viewed, source or file type, voice choices, TTS provider and character count, and TTS start or completion events.
TTS request metadata such as provider, model, character count, success or error status, error code, and latency. This diagnostic record does not include the raw narrated text.
Subscription product and offering, eligibility, purchase, trial, renewal, cancellation, expiration or refund status, entitlement, transaction or receipt information, price, currency, and usage-limit information for weekly or monthly plans. Apple or Google processes the payment; Zen does not receive your full card or bank details.

We do not intentionally include document text, pasted webpage URLs, or voice samples in analytics events.

f) Camera, photo library, and microphone permissions

Zen requests access only when needed for a feature you choose, such as scanning text, selecting an image, or recording a voice-cloning sample. Scanned text recognition is performed on your device. Permission choices can be changed in your device settings.

g) Support communications

If you contact us, we process your email address, message, and any attachments or diagnostic information you choose to provide so we can respond and resolve the request.

5. How We Use Information

We use information to:

Provide the features and content processing you request.
Create, deliver, manage, and delete cloned voices.
Process subscriptions, restore purchases, and apply usage limits.
Maintain app performance, reliability, security, and fraud prevention.
Measure feature usage and improve Zen.
Attribute installs and measure advertising performance.
Comply with legal obligations and enforce our agreements.

6. Third-Party Services

We use service providers to operate specific parts of Zen. The provider used depends on the feature, platform, and app configuration:

Supabase — anonymous authentication, pseudonymous records, entitlements, usage, diagnostics, clone metadata, and Edge Functions. Privacy policy.
Inworld AI — cloud text-to-speech and persistent cloned voices. Privacy policy and service-specific terms.
Jina AI / Elastic — webpage fetching and content extraction. Legal information.
RevenueCat — offerings, subscriptions, entitlements, receipts, and purchase restoration. Privacy policy.
Firebase and Google Analytics — product analytics and diagnostics. Google privacy policy.
AppsFlyer — install attribution and campaign measurement. Services privacy policy.
Expo — app delivery, updates, and technical infrastructure. Privacy policy.
Apple App Store and Google Play — purchases, billing, and platform services.

These providers process information on our behalf or as independent service providers under their own terms and privacy policies. Their processing and retention practices may differ from ours.

7. Tracking and Advertising Permissions

Zen uses Firebase and Google Analytics for product analytics and AppsFlyer for install attribution and campaign measurement. On iOS, Zen requests permission through Apple's App Tracking Transparency framework before IDFA is available. If permission is denied, IDFA is unavailable, but non-advertising identifiers and limited analytics or attribution data, such as IDFV, AppsFlyer ID, IP address, app events, and SKAdNetwork data, may still be processed where permitted. You can change ATT permission later in iOS Settings.

8. Sharing and Sale of Personal Information

We do not sell personal information for money. We disclose information to the service providers described above only as needed to operate, secure, analyze, and improve Zen. Where configured and permitted, attribution information may be shared with advertising measurement partners. We may also disclose information if required by law, to protect rights or safety, or in connection with a business transfer.

9. Data Retention

Local documents, imported file copies, history excerpts, progress, and preferences remain on your device until available items or app data are removed, subject to your device and backup settings.
Generated AI audio cache entries become eligible for automatic cleanup after seven days without access. The cache is capped at approximately 512 MB and can be cleared in Zen Settings. Cleanup occurs when cache maintenance runs, so deletion may not happen at exactly seven days.
Our TTS request diagnostics are scheduled for deletion after 30 days.
Pseudonymous profile, entitlement, purchase-event, usage, and voice-clone metadata are retained while needed to provide the service, restore purchases, maintain security, resolve disputes, or comply with legal obligations.
Saved clone metadata and the Inworld voice model or source recording may be retained until a valid deletion request, service termination, or another applicable retention event, subject to provider backups, policies, and legal obligations.
Analytics, attribution, and subscription providers retain data under their own retention policies and configured settings.

Deleting Zen from your device does not automatically delete Supabase, RevenueCat, analytics, or attribution records, or a saved Inworld cloned voice. Use the privacy-request process below for server-side deletion.

10. Legal Bases for Processing

Where the GDPR or similar laws apply, we rely on one or more of the following legal bases:

Performance of a contract to provide features you request.
Legitimate interests in security, analytics, and service improvement.
Consent where required, including certain advertising identifiers.
Compliance with legal obligations.

11. International Data Transfers

Our providers operate global infrastructure. Information may therefore be processed outside your country, including in jurisdictions with different data-protection laws. Where required, appropriate transfer safeguards are used by us or our providers.

12. Your Choices and Privacy Rights

Depending on your location, you may have the right to:

Request access to, correction of, or deletion of personal information.
Restrict or object to certain processing.
Request data portability.
Withdraw consent where processing is based on consent.
Opt out of qualifying sale, sharing, or targeted advertising.
Lodge a complaint with your local data-protection authority.

You can delete individual local documents, clear the AI audio cache in Settings, change app permissions in device settings, or remove the app to delete its local data, subject to device backups. Deleting a document removes the saved document and imported copy, but a short local playback history entry may remain until the app's local data is removed.

To request access, correction, or deletion of server-side data or a saved cloned voice, email [email protected] with the subject "Privacy Request" and include the User ID shown in Zen Settings → Account. Do not send document text or voice samples. We may request limited verification and will forward valid requests to relevant service providers where required. Some transaction, security, or legal records may be retained where permitted or required by law.

13. California Privacy Notice

California residents may have rights to know, access, correct, or delete personal information; to opt out of qualifying sale, sharing, or targeted advertising; and not to receive discriminatory treatment for exercising privacy rights. We do not sell personal information for money. Depending on applicable definitions, using AppsFlyer and integrated advertising platforms for attribution or campaign measurement may constitute "sharing" or targeted advertising. Denying ATT limits IDFA access. For other requests, contact [email protected].

14. Children's Privacy

Zen is a general-audience app and is not directed to children under the minimum age required by applicable law. We do not knowingly collect personal information from children in violation of applicable law. If you believe a child has provided information unlawfully, contact us so we can review and take appropriate action.

15. Security

We use reasonable technical and organizational safeguards designed to protect information. No method of electronic transmission or storage is completely secure, so absolute security cannot be guaranteed.

16. Changes to This Policy

We may update this Privacy Policy as Zen or applicable requirements change. The revised version will be posted with an updated date. Where required, we will provide additional notice or request consent.

17. Contact

Email: [email protected]
Location: Ukraine