Privacy Policy
Last updated: October 8, 2026 · speaksubtitle.com
1. Information We Collect
SubFlow AI ("we", "our", "us") collects information to provide and improve our AI-powered subtitle translation service.
- Account Information: Email address, username, and authentication credentials when you register.
- Video and Audio Content: Videos you upload on the website for subtitle processing. Google Play builds 134 (1.0.31) and 135 (1.0.32) extract audio on your device and upload that audio rather than the original video. Older Google Play build 129 (1.0.26), which is still in distribution, can upload the video to our storage as a fallback if local audio extraction fails. These Google Play builds may also send a small preview frame from your video as a project thumbnail. Uploaded content is associated with your account and kept as described in Section 3.
- Usage Data: Processing minutes used, languages selected, export formats chosen, feature interactions, and whether a project was created, processed, or exported. Random upload and selection identifiers connect steps of the same task; they do not contain your media or payment credentials.
- Acquisition Data: Campaign tags, the first landing page, and the referring website domain used to understand which channels lead to registration. We do not store the full referring URL.
- Device Information: Device type, OS version, app version, and unique device identifiers.
- Payment Information: Subscription billing is handled by Google Play or PayPal. We store verified order references, purchase history, and entitlement status to provide purchases and restore access. We do not store your payment card or bank details.
- Support and Notifications: Messages you send to support, any project reference you provide, and app/device details attached to your request. The app registers a notification token and language preference with your session to deliver processing and support updates.
2. How We Use Your Information
- Processing your videos and generating subtitles using AI models
- Translating subtitles into your selected target languages
- Managing your account, subscription, and usage quotas
- Sending transactional emails (account creation, password reset, subscription updates)
- Sending product updates and retention messages by email or push notification where enabled
- Diagnosing processing failures, with restricted access to the failure samples described below
- Measuring registration, successful delivery, return visits, and feature use by acquisition channel using aggregate reports
- Complying with legal obligations and enforcing our Terms of Service
3. Data Storage & Security
We use cloud infrastructure to store and process your data, with these safeguards:
- HTTPS for connections between the app or website and our API
- Access controls limiting data access to authorized personnel only
Website videos, videos uploaded through the older Google Play 129 fallback, and generated subtitles are retained until you delete the project or account. Deletion removes project access and schedules associated stored media for cleanup. Account deletion also removes linked interaction events, notification tokens, and support records. Purchase records needed for reconciliation and preventing duplicate grants, and installation markers used to prevent repeated promotional claims, are retained separately.
Temporary mobile audio is removed after successful processing. Failed or orphaned uploads may remain in the business API's temporary storage for up to 24 hours for retry. Separately, the recognition center may retain the original input and diagnostic metadata of an eligible recognition failure for up to 7 days, within a total 10 GiB limit, for authorized staff to investigate. This diagnostic archive is distinct from your project and is cleared according to its retention limit.
4. Third-Party Services
- OpenAI Whisper: Used for automatic speech recognition on our backend servers. We do not share your data directly with OpenAI.
- Translation services: Our processing configuration selects AI translation services such as Qwen-MT (Alibaba Cloud), or conventional translation services. Subtitle text is sent to the selected service.
- Google Cloud Text-to-Speech and Microsoft Azure AI Speech: Used to generate AI voiceover when you request dubbing. Only the subtitle text to be spoken is sent.
- Google Play and PayPal: Handle subscription billing. Their privacy policies govern payment data.
- Firebase: The Android app includes Analytics, Cloud Messaging, and App Check. Analytics collects app interactions, app-instance identifiers, purchase events, and approximate location derived from IP addresses. Messaging uses installation and notification identifiers; App Check uses app integrity information.
- Cloud Infrastructure: We use reputable cloud providers with encrypted data centers for hosting and processing.
Our Analytics account currently allows Google to use Analytics data to improve Google products and services in addition to providing Analytics. Google Signals is not enabled, and this app's Analytics property has no Google Ads or AdMob association.
5. Data Sharing
We do not sell, rent, or share your personal data with third parties for marketing. We may share data only:
- With service providers processing data to operate our platform
- If required by law, court order, or to protect legal rights
- In connection with a merger or acquisition (with prior notice to users)
6. Your Rights
- Access: Request a copy of the personal data we hold about you.
- Correction: Request correction of inaccurate or incomplete data.
- Deletion: Request deletion of your account and associated data.
- Portability: Receive your data in a structured, machine-readable format.
- Objection: Object to certain processing activities.
To exercise any of these rights, contact us at li18057190880@gmail.com.
7. Children's Privacy
SubFlow AI is not intended for children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal data, please contact us immediately.
8. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify users of significant changes via email or in-app notification. Continued use after changes constitutes acceptance of the updated policy.