SeyDit
SeyDit

Privacy Policy

Last updated: 24 August 2026

1. Operator

SeyDit is operated by:

  • Lukáš Hrnčíř
  • Business ID: 07783485
  • Business address: Ostravská 216, 261 01 Příbram, CZ
  • Email: info@hrncirovistudio.cz

2. Privacy by Design

SeyDit is designed to minimise the processing of personal data. Whenever technically possible, information is processed directly on the user's device.

SeyDit does not maintain its own database of users' voice commands, emails, calendars, reminders or notes unless explicitly stated for a particular feature.

3. OpenAI

SeyDit uses OpenAI services to provide artificial intelligence functionality.

OpenAI is the only third-party AI/ML provider to which SeyDit transfers Google Workspace user data. SeyDit connects directly to the OpenAI API and does not use an AI aggregator, gateway or model hub.

SeyDit uses the OpenAI API with the user's own API account and API billing tier; a ChatGPT Free, Plus, Pro, Business or Enterprise subscription is not used by SeyDit. The application currently uses the OpenAI Realtime API model gpt-realtime-2.1 and the gpt-4o-mini-transcribe transcription model.

Users provide their own OpenAI API key. The key is stored using Apple Keychain on the user's device.

When an AI feature is used, information required to fulfil the user's request may be transmitted to OpenAI. This may include a voice command, transcript, text entered by the user or content the user explicitly requests SeyDit to process.

Before such information is shared for the first time, the user is informed about the use of OpenAI and asked to provide the appropriate consent.

Data submitted through the OpenAI API is not used by OpenAI to train or improve generalized models by default. OpenAI may retain API data for abuse monitoring for up to 30 days under its standard API data controls. SeyDit does not claim or require Zero Data Retention.

SeyDit does not enable, request or rely on OpenAI's optional API data-sharing programmes, feedback sharing, evaluation sharing or fine-tuning. Google Workspace user data is sent only through the standard API request needed to fulfil the user's instruction.

4. Voice Data

SeyDit may process the user's voice in order to understand requests, generate responses and perform requested actions.

Voice data is not used for advertising profiling.

5. Connected Services

SeyDit may interact with device features and external services, including email, calendars, reminders, notes, location, maps and services provided by Apple, Microsoft and Google.

Access is limited to permissions granted by the user.

6. Google User Data

SeyDit accesses Google user data only after the user explicitly connects a Google account and grants the requested permissions.

SeyDit requests access to Gmail data to provide the following user-facing features:

  • displaying and reading email messages requested by the user;
  • finding and summarising email messages requested by the user;
  • preparing email replies requested by the user; and
  • sending email messages after an explicit user request and confirmation.

Google user data is used solely to provide these user-requested features. It is not used for advertising, profiling, marketing, analytics, sale of data, creation of user databases, or training or improving general-purpose artificial intelligence or machine-learning models.

SeyDit does not delete, archive, move or otherwise modify Gmail messages using its Gmail read-only access.

When the user asks SeyDit to read, summarise or otherwise process an email using its voice and artificial-intelligence features, the information required to fulfil that request is transmitted from the user’s device to the configured AI service provider. This transfer is performed solely to provide the requested SeyDit functionality and only after the user has consented to AI processing.

SeyDit’s use of raw or derived user data received from Google Workspace APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

7. Storage and Retention of Google User Data

SeyDit does not operate a server-side database containing users’ Gmail messages.

Gmail content is retrieved on demand when required to fulfil a user request. The application does not independently create a permanent copy of the user’s mailbox or Gmail messages.

If the user enables SeyDit’s conversation-memory feature, content spoken or generated during a conversation may form part of a conversation transcript stored locally on the user’s device. This may include text derived from an email that the user asked SeyDit to read or summarise. The user can delete locally stored conversation history and disable the memory feature.

Basic Google account information required to maintain the connection, such as the account identifier, email address, user-assigned account name and granted permissions, is stored locally on the user’s device.

8. Protection of Google User Data

SeyDit applies technical and organisational safeguards designed to protect personal and sensitive information.

Google OAuth refresh tokens are stored on the user’s device using Apple Keychain. Short-lived access tokens are held only as required to communicate with Google APIs.

Data transmitted between SeyDit, Google APIs and the AI service required to fulfil a user-requested feature is protected in transit using encrypted HTTPS/TLS connections.

SeyDit requests only the minimum Google permissions required for its Gmail functionality. Access is limited to the Google account and permissions selected by the user.

Users can disconnect a Google account from SeyDit at any time. SeyDit then removes its locally stored authorization credentials and requests revocation of the associated Google authorization token.

9. Analytics and Google User Data

SeyDit may process aggregated technical diagnostics to identify errors and improve application reliability.

Google user data, Gmail message content and information derived from Google Workspace APIs are not used for analytics, advertising, profiling or marketing.

10. Microsoft User Data and Microsoft 365

SeyDit accesses Microsoft user data only after the user explicitly connects a Microsoft account and grants delegated permissions through Microsoft. SeyDit acts as the signed-in user and does not use application-wide unattended access.

Depending on the features selected by the user, SeyDit may request User.Read, Mail.Read, Mail.ReadWrite, Mail.Send, Chat.Read, Chat.ReadWrite, ChatMessage.Send, Files.Read or Files.ReadWrite. These permissions are used only to identify the connected account and to read, search, summarise, prepare, send or modify the specific email, Teams or OneDrive content requested by the user. Sending a message or email requires explicit confirmation in SeyDit.

Microsoft 365 content is retrieved on demand through Microsoft Graph. SeyDit does not operate a server-side database containing users' Microsoft email, Teams messages or OneDrive files. Basic account details, user-assigned account names and granted permissions are stored locally on the device.

Microsoft OAuth refresh tokens are stored on the device using Apple Keychain. Short-lived access tokens are retained only as required to communicate with Microsoft Graph. Data is protected in transit using encrypted HTTPS/TLS connections.

When the user explicitly asks SeyDit to process Microsoft 365 content using voice or AI, only the information required to fulfil that request may be transmitted to OpenAI. Microsoft user data is not used for advertising, marketing, analytics, profiling, sale of data or general-purpose AI model training.

Users can disconnect a Microsoft account at any time. SeyDit then removes the locally stored authorization credential for that account. Access may also be revoked from the user's Microsoft account or by the relevant organisation administrator.

11. User Content

At the user's request, SeyDit may work with emails, calendar events, reminders, notes and other content.

Where AI processing is required, the relevant portion of that content may be transmitted to the AI provider.

12. Location

Location may be used for functions such as navigation, place searches and location-based reminders.

Location permission can be changed at any time through iOS settings.

13. App Purchases

SeyDit is distributed through the Apple App Store.

Payments are processed by Apple. The SeyDit operator does not receive the payment card details used for App Store purchases.

14. Analytics

SeyDit may use aggregated or technical analytics data to understand application usage, identify errors and improve the product.

Any analytics services used will be reflected in the current version of this policy and in the App Privacy information provided through the App Store.

Analytics data is not used for targeted advertising.

15. Data Retention

Personal data is retained only for as long as necessary for the relevant purpose or as required by applicable law.

Information stored solely on the user's device remains under the user's control.

External service providers may apply their own retention policies.

16. Your Rights

Where applicable under GDPR, users may have rights including access, correction, deletion, restriction, portability, objection and withdrawal of consent.

Requests may be submitted to: info@hrncirovistudio.cz

17. Third Parties

Depending on the features used, SeyDit may interact with services provided by Apple, OpenAI, Microsoft and Google.

18. Contact

  • Lukáš Hrnčíř
  • Email: info@hrncirovistudio.cz
  • Ostravská 216, 261 01 Příbram, CZ