Voice Data Retention and Destruction Policy
Last updated: 4 October 2026 (version 1.2)
This policy sets out how PrepCall retains and destroys voice data, including any data that may be treated as a biometric identifier or biometric information under laws such as the Illinois Biometric Information Privacy Act, the Texas Capture or Use of Biometric Identifier Act, and equivalent provisions elsewhere. It sits alongside our Privacy Notice, which covers all other personal data.
1. What we hold
During a practice session we process the audio of your speech in real time. From that we produce two things:
- a written transcript of what you said; and
- numerical measurements of how you sounded: headline delivery scores such as pace, energy and steadiness, and the detailed moment-by-moment vocal expression measurements produced by the analysis to support them.
All of these are measurements of how you sounded. What we hold from a session is limited to these two items.
2. Audio
The audio of a practice session is processed in real time by our processor, Hume AI, Inc., which we have configured with data retention switched off. What we keep from the session is the transcript and the measurements described in section 1.
3. Purpose
Voice data is processed for one purpose: producing your own coaching report, and tracking your own progress across your own sessions.
4. Retention
Transcripts and the vocal measurements described above are retained for 12 months from your most recent practice session.
They are deleted sooner if either of the following happens:
- you delete your account; or
- you email privacy@prepcall.me asking us to delete them. This is also how you withdraw your consent to voice processing.
5. Destruction
Records that pass the retention period are deleted from our production database. Deletion is permanent and irreversible.
6. Disclosure
We disclose session audio to Hume AI, Inc. for the purpose of performing the analysis described above, with your separate consent. The transcript and measurements are disclosed to Anthropic, PBC to draft your coaching report, and stored with Supabase in Ireland.
Your voice data is used for one purpose, producing your own coaching report, and is disclosed only to the providers named above. PrepCall is sold to individuals for their own practice.
7. Your requests
You can delete your voice data at any time by deleting your account (open the account menu, then Manage account, then Delete account), which permanently removes your transcripts, vocal measurements and reports. You can also email privacy@prepcall.me and we will delete it for you. We respond to email requests within 30 days.
8. Review
This policy is reviewed at least annually, and whenever our voice processing or our processors change.
Version 1.2, 4 October 2026: corrected the destruction section, which promised removal from backups on the next rotation (a mechanism we do not have); listed the two deletion routes that exist (account deletion, or an email to privacy@prepcall.me, which is also the consent withdrawal route); described the audio configuration rather than asserting that no recording exists anywhere; named all three processors in the disclosure section; removed statements of what we do not do. Version 1.1, 18 August 2026: clarified that stored vocal measurements include the detailed moment-by-moment expression measurements, not only headline delivery scores. Version 1.0, August 2026: first publication.