Last Updated: January 2, 2026

Introduction

Welcome to Otto (“we,” “our,” or “us”). We are committed to protecting the privacy of our users (“you” or “your”). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application.

Please read this Privacy Policy carefully. By using Otto, you agree to the collection and use of information in accordance with this policy.

Information We Collect

Information You Provide

• Account Information: When you create an account, we collect your email address, display name, and optional profile photo.
• Partner Connection: When you create or join a shared space, we store the connection between you and your learning partner.
• Audio Recordings: We collect voice recordings you create during language practice sessions. These recordings are stored to enable the duet playback feature with your partner.
• Learning Preferences: Your selected learning language and app preferences.

Information Collected Automatically

• Device Information: Device type, operating system, and unique device identifiers.
• Usage Data: App interactions, features used, session duration, and learning streaks.
• Push Notification Tokens: To deliver notifications about your partner’s activity and daily reminders.

How We Use Your Information

We use the information we collect to:

• Provide Core Features: Enable language practice sessions between you and your partner, including recording, playback, and duet creation.
• Personalize Experience: Customize content based on your selected language and preferences.