Privacy Policy
Last updated: May 13, 2026
About ClipStack
ClipStack is a desktop clipboard management application. It monitors your system clipboard, maintains a searchable history of clipboard items, and offers optional multi-device synchronization via cloud storage or local peer-to-peer connections.
Data We Do NOT Collect
ClipStack does not collect, transmit, or share any of your data with the developer or any third party. Specifically:
- No analytics — we do not use any analytics SDKs or services.
- No crash reporting — no crash logs or error reports are sent to the developer.
- No advertising — the app contains no ads and uses no ad SDKs.
- No telemetry — no usage data, feature usage statistics, or diagnostics are collected.
- No account registration — there is no sign-up process. The app does not ask for your email, name, phone number, or any personal identity.
- No developer-operated servers — ClipStack does not send your data to any server operated by the developer. The app is fully self-contained.
Data Stored Locally on Your Device
ClipStack stores the following data exclusively on your device:
- Clipboard content — text, images, and file references that you copy to your clipboard.
- Application preferences — your configured hotkeys, shortcuts, history size limit, and other settings.
- Random identifiers — a randomly generated UUID for device identification and a separate random UUID for sync grouping. These are random strings with no connection to your personal identity.
- Device name — an optional, user-provided label to identify your device in a multi-device setup.
- OAuth tokens — if you choose to enable cloud sync, access and refresh tokens for your cloud storage account are stored locally.
All of the above is stored in files within the application's data directory on your device and is never sent to the developer.
Optional Cloud Sync
ClipStack offers an optional, opt-in cloud synchronization feature. This feature is disabled by default. If you choose to enable it:
- Your clipboard history data is uploaded to your own cloud storage account (Dropbox or WebDAV, as configured by you).
- Data is stored under a
/ClipboardStack/folder in your cloud storage. - The developer has no access to your cloud storage or the data within it.
- You can disable cloud sync at any time through the application settings.
When you authenticate with a cloud provider (Dropbox, Google, or Microsoft), the OAuth login process occurs directly between the application and the provider. The developer does not see or intercept your credentials.
Peer-to-Peer LAN Sync
ClipStack includes an optional peer-to-peer synchronization feature for devices on the same local network. When P2P sync is active (as part of the cloud sync feature):
- Devices discover each other via UDP broadcast on your local network.
- Data transfers between devices use encrypted QUIC connections.
- Your device's LAN IP address and a randomly assigned port are shared only with other devices in the same sync group.
- STUN servers (operated by Cloudflare and Google) may be contacted for NAT traversal purposes. These servers receive only network connection metadata (IP address and port), never your clipboard content.
Data Retention and Deletion
- All locally stored data resides on your device and can be deleted by uninstalling the application.
- Clipboard history is automatically pruned based on your configured history size limit (default: 1,000 items, configurable between 100 and 10,000).
- Cloud-synced data can be deleted by removing the
/ClipboardStack/folder from your cloud storage. - OAuth tokens stored locally can be removed by signing out from your cloud provider within the app.
Third-Party Services
This application interacts with the following third-party services only when you choose to use optional features:
| Service | Purpose | When Contacted |
|---|---|---|
| Dropbox | Cloud storage for clipboard sync | When you enable Dropbox sync |
| WebDAV (user-configured) | Cloud storage for clipboard sync | When you enable WebDAV sync |
| Google / Microsoft OAuth | Authentication for cloud storage | During cloud provider login |
| Cloudflare STUN | NAT traversal for P2P | When P2P sync is active |
| Google STUN | NAT traversal for P2P | When P2P sync is active |
Children's Privacy
ClipStack is not directed to children under the age of 13, and we do not knowingly collect personal information from children.
Changes to This Policy
We may update this privacy policy from time to time. Changes will be posted within the application and in the project repository. The "Last updated" date at the top of this policy reflects the most recent revision.
Contact
If you have questions about this privacy policy, please open an issue in the project's repository or contact the developer through the support channels listed on the application's store page.