Privacy Policy

Captionist · Last updated: November 10, 2026

This policy explains what information the Captionist app ("Captionist", "we") handles, why, and the choices you have. Captionist is published by Technoblick.

Summary

Information we process

Audio for transcription. When you tap "Generate captions", Captionist extracts the audio track from the selected video and uploads it over an encrypted (HTTPS) connection to our server, which returns the transcript and word timings. A short clip is also sent first to detect the spoken language. The video itself is not uploaded.

To produce the transcript, our server passes the audio to a third-party speech-recognition service that processes it on our behalf, only to return the transcript.

Retention. Your audio is not stored. It is processed only to create the transcript and is discarded as soon as the transcript has been returned to the app. We do not keep copies of your audio or transcripts, and we do not use them to train models.

Technical data. Like most web services, our server may record standard request information (such as IP address and time of request) in security logs. These logs never contain your audio or caption text and are kept only as long as needed to keep the service secure and working.

Usage statistics and crash reports

Captionist uses Google Firebase Analytics, Crashlytics and Remote Config. They collect anonymous information about how the app is used (for example which features are used, how long exports take, and error types), crash reports, device model and Android version, and app-instance identifiers. They do not include your videos, audio, caption text or project names. This data is processed by Google under the Firebase privacy information and is used only to improve the app's quality and reliability.

Information stored on your device

Your projects (captions, styles, edits), preview copies of videos, and exported files are stored on your device. Exported videos are saved to your device's Movies/Captionist folder. Uninstalling the app removes its private data; exported videos you saved remain in your gallery.

Permissions

Sharing

We do not sell your information or share it for advertising. Audio is shared only with the speech-recognition provider named above, solely to create your captions. We may disclose information if required by law.

Advertising

Captionist shows ads served by Google AdMob. AdMob may collect your device's advertising ID, IP address, and information about ad interactions to show and measure ads, and, where you allow it, to personalise them. In the European Economic Area, the UK and Switzerland we ask for your consent first; you can change your choice at any time in Settings → Privacy choices. You can also reset or delete your advertising ID in your device settings. See how Google uses information from apps that use its services.

Google Play services

The app uses Google Play to offer in-app updates and the in-app review prompt. These are handled by Google under the Google Privacy Policy.

Children

Captionist is not directed to children under 13, and we do not knowingly collect information from them.

Security

Uploads are encrypted in transit with HTTPS. No method of transmission or storage is completely secure, but we take reasonable measures to protect the data we process.

Your choices

You decide which videos to transcribe. You can delete projects in the app at any time. For questions or requests about data processed on our server, contact us below.

Changes

We may update this policy. The "Last updated" date shows the latest version.

Contact

Questions about this policy or your data: info@technoblick.com