MCSync - Privacy Policy
Last updated: August 1, 2026
Document version: mcsync-privacy-2026-08-01
This Privacy Policy explains how MCSync (“MCSync”, “the application”, “we”, “us”) handles information when you use the application on your Mac. The application is developed and maintained by Magno Ciqueira under the Nexus platform and processed under the Brazilian General Data Protection Law (LGPD — Law No. 13,709/2018) and, where applicable, other data protection laws.
By installing or using MCSync, you acknowledge having access to this policy.
1. Controller Identification
MCSync is developed and maintained by Magno Ciqueira, who is responsible for the personal data processing described in this policy.
Privacy contact: [email protected]
2. What MCSync Does
MCSync is a native macOS application that connects to your Google Drive account and transfers files between Google Drive and local storage devices (SSDs or other volumes). All transfer operations are performed locally on your Mac using rclone, a command-line tool bundled inside the application. No files, previews, or metadata are uploaded to any server operated by Magno Ciqueira or the Nexus platform.
3. Information Collected and How It Is Used
3.1 Google Account and Drive Access
MCSync connects to your Google account using OAuth 2.0. Depending on the access scope you choose, the application may request:
drive— read and write access to files your account can access in Google Drive, My Drive, Shared with me, and Shared Drives; ordrive.readonly— read and download access only, with no ability to upload or modify files.
The application uses the scope you explicitly select. To change the scope, disconnect the account and connect again after choosing another access level.
Your name and email address may be displayed within the application to confirm which account is connected. This information is read from your Google profile and is never transmitted to any server other than Google’s.
3.2 OAuth Tokens
Authentication tokens issued by Google are stored exclusively in the rclone configuration file located at:
~/Library/Application Support/MCSyncDrive/rclone.conf
This file is encrypted by rclone. The encryption key is generated randomly for your Mac, protected with AES-GCM, and stored at:
~/Library/Application Support/MCSyncDrive/Security/rclone-secret.v1
Tokens are never logged, never included in operation reports, and never
transmitted to any server operated by Magno Ciqueira or the Nexus platform.
File permissions for the configuration file are set to 0600 (owner read and
write only).
3.3 Local File Operations
MCSync reads and writes files on the storage volumes and Google Drive folders you select. The application:
- accesses only the source and destination folders you explicitly choose for each operation;
- does not read, copy, or transmit your files to any server other than the Google Drive endpoint you configure;
- does not scan folders you have not selected;
- does not index or cache file contents beyond what rclone requires for transfer and verification.
3.4 Operation History and Logs
MCSync maintains a local operation history that records:
- project name and operation type;
- transfer direction, source, and destination paths;
- volume identifiers for external SSDs (path and UUID when available);
- timestamps for start and end of each operation;
- file and folder counts, total size, bytes transferred, average speed, and duration;
- transfer mode, verification type, and applied filters;
- rclone exit code and a summary of missing, different, or failed files;
- the name of the user who confirmed a cleanup operation.
This history is stored locally in:
~/Library/Application Support/MCSyncDrive/
Operation logs are stored in:
~/Library/Logs/MCSyncDrive/
None of this data is sent to any remote server. It is retained locally until you clear the history from within the application or uninstall the application.
3.5 No Analytics or Telemetry
MCSync does not include analytics libraries, crash reporters, telemetry agents, or advertising SDKs. No usage data is collected or transmitted automatically.
4. Google Drive API and Data Minimization
The application accesses Google Drive solely through the Google Drive API using your own Google account credentials. Only the data required to list, transfer, and verify the files you select is requested. MCSync does not read Gmail, Google Calendar, Google Contacts, or any other Google service.
The application does not share, sell, or use your Google Drive data for any purpose other than the file transfer operations you initiate.
MCSync’s use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
5. Use of rclone
MCSync bundles rclone (rclone.org) to perform file transfers and verifications. rclone communicates directly with Google Drive on your behalf using your OAuth token. The rclone process runs locally on your Mac and does not relay data through any intermediary server operated by Magno Ciqueira or the Nexus platform.
Third-party notices for rclone and its dependencies are included inside the
application bundle in ThirdPartyNotices.txt.
6. Permissions Requested
| Permission | Reason |
|---|---|
| Google Drive (read & write or read-only) | Perform file transfers and verifications you initiate |
| Local folder access (Finder picker) | Read from or write to the local SSD volumes you select |
| Network access | Connect to the Google Drive API on your behalf |
MCSync does not request access to your contacts, microphone, camera, location, or any other system resource not listed above.
7. Data Stored on Your Mac
All application data remains on your Mac:
| Location | Contents |
|---|---|
~/Library/Application Support/MCSyncDrive/ |
rclone configuration (encrypted), operation history, project data, manifests |
~/Library/Logs/MCSyncDrive/ |
Operation and transfer logs |
~/Library/Caches/MCSyncDrive/ |
Temporary remote listings (reconstructable, may be cleared by macOS) |
Uninstalling the application does not automatically remove these directories. You can delete them manually if you wish to remove all local data.
8. Data Sharing
MCSync does not share your data with any third party, except:
- Google LLC: your files and credentials are transmitted to Google Drive through the Google Drive API as part of the transfer operations you initiate. Google’s own Privacy Policy and API Services User Data Policy apply to data processed by Google.
No other data is shared with any party. MCSync does not sell or rent data.
9. Security
MCSync applies the following measures to protect your data:
- OAuth tokens stored in an rclone-encrypted configuration file with
0600permissions; - encryption key protected with AES-GCM and bound to your Mac;
- no token logging in operation logs or history records;
- file paths passed as process arguments, not concatenated shell commands;
- network communication with the Google Drive API performed over HTTPS only.
10. Children and Minors
MCSync is a professional application intended for audiovisual post-production workflows and is not directed to people under 18. We do not intentionally collect data from children or minors.
11. Data-Subject Rights
Subject to applicable law, you may request:
- confirmation that processing takes place;
- access to data held about you;
- correction of inaccurate or outdated data;
- deletion of data, subject to legal and operational requirements.
Because MCSync stores all data locally on your Mac, you can inspect, export, or delete your data at any time by accessing the directories listed in Section 7. To exercise rights related to any data processed by Magno Ciqueira outside the application, contact:
12. International Users and Transfers
MCSync is operated from Brazil. We seek to comply with the data-protection requirements applicable to each relationship, including, where relevant, the GDPR for residents of the European Economic Area and United Kingdom and privacy laws applicable to California residents.
Because all application data is stored locally on your own device and is transmitted only to Google’s servers under your own account, no personal data is transferred to servers operated by Magno Ciqueira outside Brazil.
13. Changes
This policy may be updated to reflect changes to the application, legal requirements, or the services it integrates. The latest revision date will appear at the beginning of the document. Material changes may be communicated through the application repository or the support channel listed below.
14. Contact
- Privacy: [email protected]
- Technical support: github.com/ciqueira/MCSync/issues