Chrome Extension

DeepFocus: Pomodoro
Timer & Todo List

An elegant Pomodoro timer extension with persistent background service-worker tracking, smart color-coded task management, detailed productivity analytics, and custom offline audio alerts.

100% Privacy Focused
Persistent Background Timer
DeepFocus Icon

DeepFocus

v1.0.0 • Popup view
Running
24:45Focusing
Focusing on vocabulary studies
2/4 Pomos
Interactive Timer Sandbox

Try the DeepFocus Live Simulator

Manage your tasks and run the Pomodoro timer. Click sound buttons below to test the Web Audio sound alert system.

Pomodoro Timer
Fast Forward
25:00
Focus: Read research papers on English syntax
Audio Alert Synthesizer

Focus Todo List

Read research papers on English syntax
Study
Write article paragraph summary
Writing
Project:

Key Capabilities

Background Resilient Timer

Engineered specifically to bypass Manifest V3 Service Worker limits. DeepFocus operates accurately even if you restart your browser, close popups, or put your device to sleep.

Color-Coded Tasks

Organize items with color-coded categories. Assign custom project scopes (Work, Study, Writing, etc.) and tie Pomodoro intervals to individual task progress.

Focus Analytics Reports

Track your consistency with beautiful offline metrics. Displays daily calendar heatmaps, hourly productivity distributions, and cumulative stats.

Synthesized Chimes

Alert sounds are synthesized on-the-fly using browser Offscreen audio buffers. Eliminates the need to download large remote audio files, ensuring instant offline alerts.

Privacy-First Policy

Runs 100% locally. DeepFocus saves configs and records inside your client browser sandboxed engine. Zero user tracking, zero data telemetry.

Local Notifications

Integrates directly with browser notification channels to wake you up gently when break or focus segments conclude.

Extension Interface Screenshots

DeepFocus Popup Countdown Interface

1. Minimalist popup focus countdown interface

Analytics options metrics panel

2. Integrated analytical reports and history metrics

Support & FAQs

The storage permission is required to save tasks, project colors, and focus statistics locally in your browser. The alarms permission is critical to wake up Chrome Service Workers, keeping background countdown intervals accurate even when your browser popup is closed.

Privacy Policy

Effective Date: June 19, 2026

1. Data Collection and Usage

DeepFocus does not collect, harvest, or request any personally identifiable information (PII) such as names, email addresses, IP addresses, or browsing history. The extension does not contain third-party tracker scripts.

2. Permissions Used and Rationale

  • storage: Used to save your focus preferences and tasks inside client-side local cache.
  • alarms: Used to wake up service workers periodically for accurate background tracking.
  • notifications: Used exclusively to generate alerts when focus blocks conclude.
  • offscreen: Used to play audio chimes locally through standard offscreen documents.

3. Data Security and Local Isolation

All your task lists, configuration presets, and stats graphs are processed and saved 100% locally in your browser's local storage (chrome.storage.local). None of this data is ever sent to external databases.

4. Contact

If you have questions regarding this policy, please open a ticket on our public GitHub repository.

Stay Focused and Organised

Install DeepFocus now to practice the Pomodoro technique with stable background timer scripts and beautiful charts completely offline.