Privacy Policy

Last updated: September 24, 2026

1. Introduction

MachineMind ("we," "our," or "us") operates Entrevoz, a real-time translation app for conversations, calls and language practice, on iOS and at entrevoz.co. This policy explains what information we collect, how we collect it, every way we use it, and every third party we share it with — including third-party AI services. We comply with applicable data protection laws, including the GDPR and CCPA.

Your permission comes first. Translation works by sending what you say or type to AI and translation services. The app shows you exactly what is sent and to whom, and sends nothing to them until you tap Allow. You can withdraw permission at any time in Profile → Account & Privacy → AI Data Sharing.

2. Information We Collect and How

2.1 Content you choose to translate (only after you allow AI data sharing)

Your voice, captured through the microphone only while you use a voice feature (you start it by tapping the microphone or joining a call).
Transcripts of what you say and text you type into the translator.
Messages you send to the AI tutor (Practice) and AI coach (Wingman).
Short voice samples, only if you turn on Voice Mimic.

2.2 Information you provide

Optional account: email address, name and password (the password is stored only as a secure hash by our sign-in provider).
Display name and preferred language.
Contacts you save: their display name, language and a random app identifier (never phone numbers or your address book).
Invites you create: your name, language and the label you give the invite.

2.3 Information created as you use the app

A random device identifier generated by the app, and your personal dial code derived from it.
Call history: partner name, date, duration, languages, and the call's translated transcript (up to 60 lines), so you can review past calls on any device.
Language-practice progress: flashcards, fluency level, and vocabulary words taken from your calls.
A push token, so incoming calls can ring your phone.
Recordings you make with the Record button — saved only on your device.
Translation phrasebook and preferences — saved only on your device.

2.4 Collected automatically

IP address and approximate country when you create an account, and IP addresses processed transiently for security and rate limiting.
Device and browser type.
Usage statistics without content: language pair, text length, which translation service answered, and response time.
Nearby (optional): your approximate location while the Nearby screen is open and only if you grant location permission, used to show other users nearby. It expires automatically after 30 minutes.

2.5 Microphone and camera

Used only while you use a voice or call feature, after you grant permission in iOS. Speech is converted to text by your device's speech recognition or, when that is unavailable, by OpenAI Whisper. Camera video is used only in video calls. We do not record calls; only you can record, and recordings stay on your device. You can revoke access anytime in iOS Settings → Entrevoz.

3. How We Use Information

To transcribe, translate and optionally speak your conversations.
To connect calls, ring the people you call, and show who is calling you.
To keep your contacts, call history and practice progress available to you.
To run the AI tutor, AI coach and call summaries you request.
To secure the service, prevent abuse and fix problems.
To manage your account and, on the website, purchases.

We do not sell your personal information, do not use it for advertising, and do not track you across other companies' apps or websites.

4. Third Parties We Share Data With

We share data only with the service providers below, only after you allow AI data sharing where AI is involved, and only as needed to provide the feature you are using.

4.1 AI and translation services

OpenAI (Whisper)

Speech-to-text

Short recordings of your voice while you use a voice feature, when your device's built-in speech recognition is unavailable or not used. Returns the transcript.

Anthropic (Claude)

Translation, AI tutor (Practice), AI coach (Wingman), call summaries

Text you type or speak, recent lines of the same conversation (for accurate translation), messages you send in Practice and Wingman, and call transcripts when you ask for a post-call summary or turn on Learning Mode.

Google Translate, MyMemory (Translated srl)

Fast text translation

The individual phrase being translated (and single vocabulary words from your calls for Practice flashcards). No account or device identifiers are sent.

ElevenLabs

Spoken voice output (optional)

Only if you turn voice output or Voice Mimic on: translated text to be spoken and, for Voice Mimic, short samples of your voice used to create a temporary voice that is deleted automatically within about 2 hours.

Under their API terms, OpenAI and Anthropic do not use data submitted through their business APIs to train their models.

4.2 Infrastructure services

Daily.co

Video calls

Live audio and video of 1:1 video calls, carried between you and your partner. Daily does not record calls for us.

PeerJS and Metered (TURN relay)

Peer-to-peer connections

Connection signaling and, when a direct connection is not possible, relayed encrypted audio/video for talk, group and face-to-face features.

Supabase

Database and sign-in

The account, contacts, call history, directory, invite, learning-progress and push-token records described in section 2.

Vercel and Upstash

Hosting and abuse prevention

Serves the app; processes IP addresses transiently for security and rate limiting.

Apple

Push notifications and on-device speech recognition

A push token to deliver incoming-call alerts. When iOS speech recognition is used, audio is handled by Apple under Apple's privacy policy.

Stripe

Payments on our website

Payment details for purchases made on entrevoz.co. The iOS app does not process payments. We never receive your full card number.

Equal protection. We confirm that each third party we share user data with provides the same or equal protection of that data as stated in this policy: they may use it only to provide their service to us, must keep it confidential and secure, and may not sell it or use it for advertising. Each also processes data under its own privacy policy.

5. Data Retention

Audio and text sent for transcription or translation: not stored by us after the result is returned (except the call history you keep). AI providers may retain it for a limited period for safety and abuse monitoring, as described in their own policies.
Account, contacts, call history, invites, directory entry and practice progress: kept until you delete them or delete your account.
Voice Mimic voices: deleted automatically within about 2 hours.
Nearby location: expires after 30 minutes.
On-device data (recordings, phrasebook, preferences): stays on your device until you clear it or delete the app.

6. Your Choices and Rights

Withdraw AI permission: Profile → Account & Privacy → AI Data Sharing → Turn Off. Translation features then pause and nothing more is sent.
Delete everything: Profile → Account & Privacy → Delete My Account. This deletes your account and your server-side contacts, call history, directory entry, invites, push token and practice progress, and clears this device.
Access and portability: Account & Privacy → Export My Data.
Microphone, camera and notifications: iOS Settings → Entrevoz.

Under the GDPR, CCPA and similar laws you may also request access, correction or deletion by contacting us (section 11). We will not discriminate against you for exercising your rights.

7. Security

Data is encrypted in transit (HTTPS/TLS; call media uses DTLS-SRTP). Server records are protected by access controls. No method of transmission over the internet is 100% secure, and we cannot guarantee absolute security.

8. International Transfers

We and our providers process data in the United States and other countries where they operate.

9. Children's Privacy

Entrevoz is not intended for children under 13, and we do not knowingly collect personal information from children under 13. If you believe a child has provided us information, contact us and we will delete it.

10. Changes to This Policy

We will post any changes on this page and update the "Last updated" date. If a change adds a new recipient of your data, the app will ask for your permission again before sending anything to it.

11. Contact Us

MachineMind

support@machinemindconsulting.com

Resumen en español

Para traducir, Entrevoz envía lo que dices o escribes a OpenAI (voz a texto), Anthropic Claude, Google Translate y MyMemory (traducción) y, solo si activas la voz, a ElevenLabs.
No se envía nada hasta que tocas Permitir. Puedes desactivarlo en Perfil → Cuenta y privacidad → Compartir datos con IA.
Guardamos tu cuenta (opcional), contactos, historial de llamadas con transcripción, progreso de práctica y token de notificaciones hasta que los borres.
No vendemos tus datos ni los usamos para publicidad. Borra todo en Cuenta y privacidad → Eliminar mi cuenta.