Privacy Policy

1. Introduction

Zinro Labs ("Zinro," "we," "us," or "our") operates the Zinro Android application (the "App") and website (zinro.app). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our App and services.

Zinro is an AI writing assistant for Android. It helps users draft replies in messaging apps by generating context-aware suggestions based on the visible conversation text when the user explicitly requests AI writing assistance. By downloading and using the Zinro app, you agree to the collection and use of information in accordance with this policy.

2. Information We Collect

2.1 Personal Information

When you sign up, we collect your name, email address, and Google account profile information (via Google OAuth). If you choose to set up a business profile, we collect your business name and business description.

2.2 Conversation Text for AI Suggestions

When the user explicitly requests AI writing assistance, Zinro reads the visible text from the active conversation on your screen. This text is processed as follows:

• When it happens: Only when the user explicitly requests AI writing assistance.
• What is read: Only the visible text in the current conversation that is needed to generate a contextually relevant reply.
• How it is used: The text is sent to the selected AI provider (Groq, OpenAI, Anthropic, or Gemini) solely to generate reply suggestions. Zinro does not intentionally store conversation content after processing the request.
• What Zinro does NOT do: Zinro does not continuously monitor conversations. It does not read chats in the background. It does not store conversation content. It does not send messages automatically. Every AI-generated suggestion must be reviewed and manually sent by the user. It does not access private data fields such as passwords or payment forms.

2.3 Usage Metadata

We collect metadata about your usage (e.g., number of AI suggestions generated) to improve the app.

3. How We Use Your Information

• To provide AI-powered writing suggestions when you request them
• To personalize suggestions based on your saved business context and tone preferences
• To send transactional emails (team invitations via Brevo)
• To improve the app based on usage patterns and feedback

4. Accessibility Service Permission

4.1 Why Zinro Requires This Permission

Accessibility enables Zinro to read the visible conversation and identify the active text field required for its core functionality.

4.2 When It Is Used

Accessibility is used solely to provide Zinro's AI writing assistance feature. It is never used for advertising, profiling, analytics, or continuous background monitoring. The Accessibility Service is only active when you have explicitly tapped a text input field and requested writing assistance. Accessibility data is processed only while generating the writing assistance requested by the user and is discarded after processing.

4.3 What Data Is Accessed

Only the visible text from the active conversation view is accessed. Zinro does not access passwords, payment information, or other sensitive data fields.

4.4 What Zinro Does NOT Do

• Does not monitor conversations in the background
• Does not read messages without your interaction
• Does not send messages automatically. Every AI-generated suggestion must be reviewed and manually sent by the user.
• Does not modify apps or system settings
• Does not collect or store chat history
• Does not share conversation content with third parties for advertising or training

4.5 User Control

You can disable the Accessibility Service permission at any time from your Android device Settings. When disabled, Zinro's core writing assistance feature will not function. You can re-enable it whenever you choose.

5. AI Processing & Third-Party Providers

When you request writing assistance, the visible conversation text is sent to one of the following AI providers for processing:

• Groq
• OpenAI
• Anthropic
• Gemini
• OpenRouter

These providers process the text transiently to generate reply suggestions. Conversation text is sent only to generate the writing assistance requested by the user. All transmissions are encrypted in transit.

6. Data Storage & Security

Your account data is stored on MongoDB Atlas (our cloud database provider). We use encryption in transit (TLS) and at rest. Access tokens are stored securely on your device using Android's EncryptedSharedPreferences. We implement industry-standard security measures to protect your personal information.

7. Data Retention & Deletion

We retain your account data until you delete your account. To delete your entire account and all associated data, contact us at hello@zinro.app. Deletion requests are processed within 7 business days.

8. Third-Party Services

Zinro integrates with the following third-party services:

• Google OAuth — for authentication (sign in with Google)
• Brevo (Sendinblue) — for transactional emails (team invitations)
• Groq / OpenAI / Anthropic / Gemini / OpenRouter — for AI model inference, processing visible conversation text transiently to generate suggestions
• MongoDB — for database

9. Your Rights

You have the right to:

• Access your personal data held by us
• Request correction of inaccurate data
• Request deletion of your data
• Export your saved data
• Withdraw consent for business context processing (disable in settings)
• Disable the Accessibility Service at any time

10. Contact

For privacy-related inquiries, contact us at: hello@zinro.app