Congestus privacy policy
Last updated: November 6, 2026
Congestus is a local desktop application. It has no accounts and no telemetry, and includes no ads or analytics. It only stores a summary of each scan on your computer. Its only internet connection is an optional check for new versions. If you buy a licence, the purchase takes place on the website through Stripe.
1. Data controller
The controller for the app and this website is DIODE LOGIC SL, Spanish tax ID (NIF) B22434658, Avenida de Manoteras 24, planta 2, 28050 Madrid, Spain. Contact: support@diodelogic.com.
2. Data stored on your computer
When you use the app, the following is saved on your computer and nowhere else. We cannot see, access or recover it.
- A summary of every scan: date, scanned folder, totals, the list of the biggest files (path and size) and totals per type.
- Your preferences (excluded folders, symbolic links, theme, update check).
- All of it in a local database: on macOS in ~/Library/Application Support/Congestus, on Windows in %APPDATA%/Congestus and on Linux in ~/.local/share/Congestus.
- If you activate a licence, the key, which contains the holder’s name and email, is stored in the system preferences and in a license.key file next to the database.
3. Permissions and system features
- File reading
- Only to read names, sizes and dates in the folders you scan. The app never opens file contents.
- Full Disk Access (macOS, optional)
- Needed only if you want to scan the whole disk, including system-protected folders.
- Trash
- Only when you ask to send files to the Trash, after confirming.
4. Third-party services
The external services involved, and with which data, are these:
- None inside the app
- Congestus integrates no advertising, analytics or crash-reporting services.
- Stripe (licence purchase, on the website)
- The licence is bought on congestus.app through Stripe (Managed Payments), which acts as reseller of record: it handles the payment, issues the invoice with the VAT for your country and handles refunds. We never see your card details. Stripe gives us your name and email address so we can generate your key and send it to you; details are in the Diode Logic privacy policy.
5. Network connections
Once a day, unless you switch it off in Settings → Updates, the app downloads a small file from congestus.app to learn whether a new version exists and which licence keys have been revoked. The request includes no data about you or your files; the server notes the connection in its access logs like any website.
6. Retention and deletion
Delete single scans from the History tab, clear the history from Settings or remove the data folder listed above. For data about a licence purchase, see the Diode Logic privacy policy or write to us.
7. Your rights
Under Regulation (EU) 2016/679 (GDPR) and Spanish Organic Law 3/2018, you can exercise your rights of access, rectification, erasure, objection, restriction and portability by writing to support@diodelogic.com. You can also lodge a complaint with the Spanish Data Protection Agency (aepd.es).
8. Children
Congestus is not directed at children under 14 and we do not knowingly collect personal data from children.
9. Changes to this policy
If we change this policy, for example because a new feature uses a new service, we will update this page and the “Last updated” date.
10. Contact
Questions about privacy? Write to us at support@diodelogic.com.