Compare Toggl Track, one sec, To-do List, and StayFocusd: Which Extension is the Best?

The core function that One Sec uses to make users more productive is a pause before opening the website. When I open websites I have defined, such as Twitter, a gray page with a countdown appears. During this period, I was reminded that I didn't want to spend so much time on Twitter and asked myself whether this was intentional or just a reflex out of boredom.
This worked very well for us in the test and there were no problems.

It is also possible to adjust the delay individually. If you only need the reminder but don't want to be disturbed too much, you can set the timer to just one second, or several seconds if you prefer.

Finally, a useful function is the analysis dashboard. This provides analyses of your surfing behavior, showing you at a glance how often you try to open these websites during the day. However, we would like to see more analysis options here.

All in all, the functions are kept very simple; further options for time tracking would be an advantage here so that you don't need additional extensions. These functions are already available in the mobile app. One Sec is a good addition to existing time management extensions.

We like that it nails the essentials without pretending to do everything. You can capture tasks quickly, organize with simple lists or tags, add due dates and reminders, and attach short notes to keep context. It also syncs and works offline when needed. The flipside is clear: there are no advanced filters, templates, or automations, and integrations are minimal. If “fast basics” is your goal, it succeeds.

StayFocusd packs a solid set of productivity features. You can flexibly set website time limits, block domains, pages, or just distracting content (like videos or images). The “nuclear option” blocks everything except your allowed sites, which is a great focus booster. YouTube blocking targets shorts and recommendations, and usage analytics help you spot your browsing patterns. Cross-device sync is handy, though some advanced controls could be improved.

It feels instant, which matters more than people admit. The pop-up opens quickly, typing and checking off tasks are immediate, and sync behaves reliably across sessions without hogging memory or slowing other tabs. Staying fast keeps you in flow—and that’s the real performance test for a to‑do tool. We never felt it getting in our way.

The extension is lightweight and responsive, without slowing your browser. Features work reliably, and time limits activate quickly. Minor lags occur in the analytics dashboard and cross-device sync, but overall, performance is smooth and stable for day-to-day use.

The user interface is clean and minimalist, and this also applies to the setup and settings. The extension offers an effective use of visual elements for taking a break by displaying a preset screen with a countdown. There would be potential for improvement here if the screen could be customized.

The interface is clean, calm, and focused on the list. We noticed readable typography, sensible spacing, and a clear hierarchy that keeps controls out of the way. Keyboard navigation works well, and the UI feels snappy in both pop-up and full view. The minimalist approach avoids visual clutter without feeling bare. It looks and feels like a tool designed for momentum.

The browser extension is completely free of charge. However, you only get a small number of functions. For anyone who only needs the basic function, this is unbeatable value for money.

OneSec also offers an app with additional functions. At $4.99/month or $49.99/year, it also has a good price-performance ratio.

As a free, lightweight checklist, it delivers real everyday value. There is a ceiling for power users, who may still want a pro task manager as needs grow. But as a companion list that stays out of your way, it punches above its (free) weight

This is a tool you understand in a minute. We didn’t need a tour—adding, editing, reordering, and completing tasks are all immediately discoverable, and the few shortcuts are easy to remember. The daily flow of capture → prioritize → complete is frictionless, and it’s forgiving when you make quick edits or misclicks. If you value speed over setup, it shines.

Set up is fast and all main functions are accessible with just a few clicks. Adding sites or setting limits is straightforward, and tooltips help if you need them. The nuclear option and challenge features are easy to use but offer enough resistance to accidental changes. Mobile integration is available, though setup there could be smoother. It’s user-friendly with almost no learning curve.

It keeps things modest, which often helps privacy by default. From our use, it appears to rely on browser sync with local storage offline and keeps permissions lean, avoiding unnecessary prompts. We’d still like clearer public documentation about data handling and retention. In practice, it benefits from the security of the browser’s sync, but more transparency would inspire extra confidence.

StayFocusd runs mostly on your device and collects very little personal data. The privacy policy is transparent, and data for analytics is anonymized. The extension only requests required permissions, though some users may still worry about the broad “read and change all your data” permission. No tracking cookies or web beacons are used.