Privacy Policy
Last updated: August 2, 2026
Privacy by default: Caption Flow features support offline processing, regardless of
whether the phone is online or not.
Due to quality limitations of offline transcription and translation models, we offer online options for
the best quality and convenience. In either case, user data is processed for app functionality only, and
not saved or shared with third-parties.
1) Information We Handle
Audio and speech (Live Caption)
- Offline processing: speech stays on your device when you use offline transcription.
- Online processing: when you choose online transcription, audio is sent to Google for processing.
Screen text (Live Translate)
- OCR (text extraction) is always performed locally on-device.
- Instant screen translate takes one screenshot only after you tap its Quick Launcher action. The screenshot is processed temporarily in memory and is not uploaded or stored.
- On Android 11 and newer, Instant screen translate uses Caption Flow's Accessibility service to take these user-requested screenshots. The service does not read or control screen elements, monitor activity, or take screenshots automatically.
- If online translation is selected, extracted text is sent to Google Translate. Extracted text isn't shared with any other third-party service or stored on our servers.
Account and premium data
- Premium uses Firebase Authentication to identify your account.
- Language-learning vocabulary you save manually, by double tapping a word on the caption overlay and clicking the bookmark button, is stored in our backend, linked to your account to easily retain the vocabulary.
Advertising
- Free users may choose to watch rewarded full-screen ads provided by Google AdMob to continue offline Live Caption in 30-minute blocks or gain access to Google Translate. Premium users do not see ads.
- Google and its advertising partners may process device identifiers, approximate location, and ad interaction data to provide, measure, and personalize ads according to your choices and applicable law.
Local files (Subtitle Overlay)
SRT files opened from your storage are not uploaded by this feature.
2) Permissions
- Microphone/Internal audio: live speech transcription.
- Screen capture: text recognition for Live Translate.
- Accessibility: one-shot screenshots for Instant screen translate when you explicitly tap that action.
- Display over other apps: subtitle overlays.
- Internet: premium verification, online services, and model downloads.
3) Third-Party Services
- Google Cloud services (only when online features are enabled).
- Firebase Authentication (a service owned by Google used for account sign-in and identity).
- Google Play Billing (subscription purchase processing).
- Google AdMob and the Google User Messaging Platform (advertising and consent choices for free users).
4) Data Retention and Security
Account-related data is protected with reasonable safeguards. Real-time audio Live Caption and extracted screen text for translation are not stored on our servers.
5) Children’s Privacy
Caption Flow is not directed to children under 13, and we do not knowingly collect personal information from children under 13.
6) Policy Changes
We may update this policy from time to time. Any updates become effective when published.
7) Contact
For privacy questions, use the support email listed on our Google Play page.
Google services are governed by Google Privacy Policy.