Privacy Policy

What changed on October 3, 2026: We corrected this policy to match how the app works today: how to delete your account and request your data, which providers process data, how speech recognition works, and what we keep. We removed services we don't use. These are accuracy corrections. They take effect when published and don't reduce your rights.

Introduction

VoiGu, Inc. (“VoiGu,” “we,” “our,” or “us”) operates the VoiGu language learning service, including our mobile applications for iOS and Android, our website at www.voigu.com, and related services (collectively, the “Service”).

This Privacy Policy describes the personal information we collect, how we use and share it, and the choices you have. By using VoiGu, you agree to the practices described here. If you do not agree, please do not use the Service.

Information we collect

We collect only the information needed to operate the Service, improve learning outcomes, and meet legal obligations.

Account information

When you create a VoiGu account, we collect your email address and a password (stored as a one-way hash). If you sign in with Apple (iOS only) or Google, we receive your email and basic profile information from that provider. We don't receive your password. You may optionally add a display name, profile photo, native language, target language(s), age range, and learning goals.

Guest accounts

You can use VoiGu without creating an account. In Guest Mode, we generate an anonymous device identifier so we can save your progress, streak, and XP locally and on our servers. Guest data is tied to that device only. If you later create an account, you can convert your guest progress to your new account. Until then, guest data stays tied to that device's guest session.

Learning data

We collect data that powers the learning experience, including:

Lessons started, completed, and skipped
XP earned, hearts remaining, and crowns awarded
Daily streak, Streak Freeze usage, and league placement
Quiz answers, mistakes, and time spent per question
Words and grammar concepts you've practiced
Course preferences (target language, level, daily goal)

Voice and audio data

Speaking practice uses your microphone. See Voice & speech data for how speech works in VoiGu.

Device and usage data

We automatically collect:

Device model, operating system, and app version
Crash logs, performance traces, and error diagnostics
IP address and approximate location (from your IP address)
App and feature usage events (e.g., screens viewed, buttons tapped)
Referral source if you arrived from an ad or campaign link

Payment information

Subscriptions are processed through the Apple App Store or Google Play. We do not receive or store your full credit card number, billing address, or CVV. We receive a transaction identifier and the subscription tier you purchased.

Communications

If you contact our support team, we keep a record of the correspondence and any information you choose to share so we can resolve your request and improve our service.

How we use your information

We use your information to:

Provide, maintain, and personalize the Service
Adapt lessons to your level, weak spots, and pace
Sync your streak, XP, hearts, and progress across your devices
Process subscription payments and manage your billing status
Send transactional notifications (lesson reminders, streak alerts, purchase confirmations)
Send marketing communications, where you have opted in or where permitted by law (you can opt out at any time)
Detect, prevent, and respond to fraud, abuse, and security incidents
Improve the Service through analytics, including Amplitude session replay
Comply with applicable laws and respond to legal requests

Legal bases for processing (EEA, UK, Switzerland)

If you are located in the European Economic Area, the United Kingdom, or Switzerland, our legal bases under the GDPR / UK GDPR are:

Performance of a contract — to provide the Service you signed up for, including syncing your progress and processing subscriptions.
Legitimate interests — to secure the Service, improve features, and prevent fraud, balanced against your rights.
Consent — for marketing emails, microphone access, and optional analytics. You can withdraw consent at any time in Settings.
Legal obligation — where we must process data to comply with applicable laws (e.g., tax, fraud-prevention).

Voice & speech data

Speaking practice uses your device microphone. Here is how speech works in VoiGu:

Speech recognition. When you use speaking practice, your voice is processed by Apple's (iOS) or Google's (Android) speech recognition service to turn what you say into text. VoiGu doesn't store recordings, and our servers don't receive your audio.
Session replay. The text of your spoken answers can appear in Amplitude session replays. See Analytics & tracking preferences.
Lesson audio. The audio you hear in lessons is your phone's text-to-speech voice.
No sale. We do not sell your personal information.

Subscriptions & payments

VoiGu Plus and VoiGu Family subscriptions are sold through the Apple App Store and Google Play. The processing of your payment, including renewals and refunds, is governed by the platform's terms.

We receive a token confirming your subscription tier and renewal date — not your card details.
To cancel a subscription, manage it in your Apple ID Subscriptions or Google Play Subscriptions.
For refunds, contact Apple Report a Problem or Google Play support.

We do not sell your personal information. We share it only as described below.

Service providers (processors)

Google Firebase & Google Cloud — sign-in (Firebase Authentication), database (Cloud Firestore), file storage for profile photos (Cloud Storage), server functions (Cloud Functions), and analytics (Google Analytics for Firebase). Google processes data on our behalf under data processing agreements.
Amplitude — product analytics and session replay.
Bugsnag — crash reports, which can include your name and email.
Apple App Store / Google Play — subscription billing and receipt validation.
Revnix — our subscription service provider. Revnix receives your name, email and account ID.
Customer support tools — to manage email tickets and live chat.
Email delivery providers — to send transactional and (where opted in) marketing emails.

Legal & safety

We may disclose information when required by law, in response to valid legal process, to protect the rights, property, or safety of VoiGu, our users, or the public, or to investigate fraud or security issues.

Business transfers

If VoiGu is involved in a merger, acquisition, or sale of assets, your information may be transferred to the successor entity, subject to this Privacy Policy or a comparable replacement.

International data transfers

VoiGu is headquartered in the United States. Our service providers may process your data in the U.S., the European Union, or other countries. When we transfer personal data out of the EEA, UK, or Switzerland, we rely on the European Commission's Standard Contractual Clauses or other lawful transfer mechanisms.

Data retention

We retain your information only as long as needed to provide the Service or meet legal obligations:

Active accounts — for the life of the account.
Guest data — stays tied to that device's guest session.
Analytics and crash reports — kept for a limited time under our analytics and crash-reporting providers' retention.
Purchase records — Apple and Google Play keep their own purchase records under their terms. Revnix may keep its own records; it anonymizes rather than deletes.
Support correspondence — kept while we need it to help you. To ask us to delete it, email privacy@voigu.com.

Your rights and choices

Depending on where you live, you may have the right to access, correct, delete, port, or restrict the processing of your personal information, and to object to processing or withdraw consent.

Access. To ask what data we hold or for a copy, email privacy@voigu.com. We answer within 30 days.
Correction. Edit your profile in-app or contact us.
Deletion. In the app, go to Profile → Account → Danger zone → Delete account. Deletion is permanent and cannot be undone. Guest mode has no in-app delete.
Marketing opt-out. Use the unsubscribe link in any marketing email.
Do Not Track / GPC. We honor Global Privacy Control signals where applicable.
Complaints. EEA/UK residents may complain to their local Data Protection Authority.

To exercise any right, email privacy@voigu.com. We respond within 30 days. We may need to verify your identity before fulfilling certain requests.

California residents (CCPA / CPRA)

California residents have additional rights, including the right to know what personal information we collect, the right to delete it, the right to correct it, and the right to opt out of the “sale” or “sharing” of personal information. VoiGu does not sell personal information. To exercise California rights, email privacy@voigu.com with the subject line “California Privacy Request.”

Children's privacy

VoiGu is intended for users 13 and older (16+ in the European Economic Area, the United Kingdom, and Switzerland). We do not knowingly collect personal information from children under those ages. If you believe a child has provided us with personal information, please email privacy@voigu.com and we will delete it promptly.

VoiGu Kids, a separate product designed for children with parental consent, is governed by its own COPPA-compliant privacy notice.

Notifications

We send reminders and notices to keep you on track:

Lesson reminders at your chosen daily time.
Streak alerts when your streak is about to expire.
Daily quest reminders in the evening.
Account & billing notices (transactional, not optional).
Tips, news, and offers only with your consent.

Reminders are local notifications set by the app. They are scheduled between 8 AM and 9:30 PM your time, and changing time zones can shift them. You can turn off reminders in Profile → Notifications, or in your device's system settings.

Analytics & tracking preferences

We use Amplitude (product analytics and session replay) and Firebase Analytics to understand how the Service is used and to improve it. Analytics events are linked to a device or account identifier. We use Amplitude session replay to see how the app is used. Replays can include what's on screen, including the text of your spoken answers. Crash reports (Bugsnag) can include your name and email.

You can turn off product analytics and session replay (Amplitude) at any time in Profile → Privacy → Usage analytics. Firebase Analytics still collects basic usage data when this is off. Turning it off does not affect transactional messages or learning-data syncing.

See our Cookies Policy for details on web tracking.

Security

We take security seriously. All data is encrypted in transit (TLS 1.2+) and at rest (AES-256). Authentication is handled through Firebase Authentication. For the full picture, see our Security Policy.

Changes to this policy

We may update this Privacy Policy from time to time. If we make material changes, we will notify you in-app or by email at least 14 days before the new policy takes effect. The “Last updated” date at the top of this page reflects the most recent revision.

Contact us

Questions about this Privacy Policy or your data? Reach our Data Protection team:

Privacy and data requests: privacy@voigu.com
App support: support@voigu.com
General website questions: hello@voigu.com
Postal: VoiGu, Inc., Attn: Privacy, 548 Market Street #94109, San Francisco, CA 94104, USA