Legal

Privacy Policy

Last updated: June 2026

      Short version: Lastleaf stores your tab history locally on your device using IndexedDB. We do not collect, sell, or share your personal data. The only external network requests are optional anonymous analytics (counting installs and rescued tabs — no tab content, no URLs) and an optional AI summary feature that sends note text to an AI model.
    

1. Who we are

Lastleaf is a Chrome extension developed by Umbrova. You can reach us at hello@umbrova.com.

2. What data Lastleaf stores

All data created by Lastleaf is stored locally on your device using IndexedDB via chrome.storage.local. This includes:

Titles and URLs of tabs you close (above the minimum time threshold)
Time spent on each tab and session timestamps
Topic clusters derived from tab titles using local NLP processing
Extension settings — minimum tab time, excluded domains, retention period

This data never leaves your device except as described in Sections 4 and 5 below. It is not transmitted to Umbrova or any third party. Uninstalling the extension permanently deletes all stored data.

3. What data we do not collect

Lastleaf does not collect, transmit, or store:

Your name, email address, or any personally identifiable information
The content of web pages you visit
Cookies or tracking identifiers linked to your identity
Any data from domains on your excluded domains list

There is no account system. No sign-up is required.

4. Anonymous analytics (optional)

Lastleaf includes optional anonymous usage analytics to help us understand how the extension is used. If enabled, the extension sends lightweight event counts to a backend service hosted on Vercel, which writes to Upstash Redis. The events tracked are:

install — when the extension is first installed
tab_buried — each time a tab is captured
tab_rescued — each time a tab is reopened from the dashboard
dau — a daily active use signal (once per day)

These events contain no tab titles, no URLs, no page content, and no personally identifiable information. They are pure counters. No data is shared with third parties and no data is used for advertising.

Analytics can be disabled in the extension settings at any time.

5. Permissions

Lastleaf requests the following Chrome permissions and uses them as follows:

storage — to save your tab history and settings locally on your device
tabs — to detect when tabs are closed and read their title and URL
history — to check time spent on tabs before they are captured
scripting — to run the dashboard and popup pages

6. Third-party services

The optional analytics feature uses the following third-party services:

Vercel — hosts the analytics proxy endpoint. Vercel's privacy policy: vercel.com/legal/privacy-policy
Upstash Redis — stores anonymous event counters. Upstash's privacy policy: upstash.com/privacy

7. Data retention

Full tab records are kept locally on your device for 90 days by default (adjustable in settings). After that, older records are automatically compressed to lightweight summaries to conserve storage space. You can clear all data at any time from the Settings page.

8. Children's privacy

Lastleaf is not directed at children under the age of 13. We do not knowingly collect any information from children.

9. Changes to this policy

If we make material changes to this privacy policy, we will update the "Last updated" date above. Continued use of the extension after changes constitutes acceptance of the updated policy.

10. Contact

If you have questions about this privacy policy or how Lastleaf handles your data, please contact us at hello@umbrova.com.