Privacy Policy

Last updated: 09.04.2026

1. Introduction

This application ("Calendar Assistant") is a Telegram bot that integrates with Google Calendar to help users manage their events.

2. What Data We Collect

We may process the following data:

• Telegram user ID, text and voice messages sent to the bot
• Google account information (via OAuth)
• Google Calendar data (events, titles, times) as requested by the user

3. Purpose of Processing

The data is used solely to provide the functionality of the bot, including:

• Creating and editing calendar events
• Responding to user commands

4. Legal Basis (GDPR)

Processing is based on user consent (Art. 6(1)(a) GDPR), given when connecting their Google account and using the bot.

5. Data Sharing

We do not sell or share your data with third parties, except as required to provide the service:

• Google (for Google Calendar API, Gemini API)
• OpenAI (for transcribing voice messages)
• Telegram (for bot messaging)
• AWS (hosting infrastructure in the EU)

6. Data Controller

Responsible for data processing:
Victor Umanskiy
Radolfzeller Str. 7, 81243 München
Email: [email protected]

7. Data Storage

Data is processed on servers located in the European Union (AWS EU region). We store only the minimum data required to operate the service.

8. Data Retention

Data is retained only as long as necessary to provide the service. Users may request deletion at any time.

9. User Rights

Under GDPR, you have the right to:

• Access your data
• Request correction or deletion
• Withdraw consent at any time

10. Data Deletion

You can request deletion of your data by:

• Contacting us via email or post, see point 6.

11. Security

We take appropriate technical and organizational measures to protect your data.

12. Changes

This policy may be updated from time to time. The latest version will always be available on this page.