Choose a focus app by the device and access route where distractions happen. LeechBlock NG fits browser-only rules; Cold Turkey Blocker covers websites and native apps on Windows and macOS; Freedom is worth considering when multi-device coverage matters; SelfControl offers a forceful free website block on macOS; Session combines a Mac focus timer with blocking on its Pro plan; and one sec adds a pause or reflection before access.
For example, if you check a social site in Firefox during weekday work hours, a browser extension may be enough. If you switch browsers or open the desktop app, you need a blocker that covers those surfaces too. This is a fit-based comparison, not a measured ranking of which app improves focus most.
Which focus app should you choose?
A focus app is software that limits access to selected websites or applications, schedules focus periods, or interrupts an impulsive opening with a prompt. Start by deciding whether you need to prevent access, apply rules at predictable times, or simply pause before continuing.
- Choose a hard blocker when access should be prevented for a defined period and the product covers the target on your device.
- Choose scheduled blocking when your work or study hours are predictable.
- Choose an intervention when a breathing prompt, delay, or question is enough to help you reconsider.
Match the blocker to the route you use to reach a distraction; a tool cannot cover a browser, app, or device it does not monitor.
Compare focus apps by blocking surface and enforcement
The table summarizes each product’s strongest fit and an important boundary. Prices and plan details below were checked on November 14, 2026. Regional pricing, tax, storefronts, and promotions can change, so confirm the vendor’s live terms before buying.
| App | Strongest fit | Blocking surface and key limit | Price or plan note |
|---|---|---|---|
| Freedom | Multi-device sessions | Websites and apps on supported devices; Chromebook and Linux coverage uses browser extensions, not desktop-app blocking. | Free tier; Premium currently displays $3.33/month billed annually or $8.99/month monthly. Lifetime is shown at $99.50 in a promotion against a $199 reference price. |
| Cold Turkey Blocker | Configurable desktop blocking | Websites and applications on Windows and macOS; no Linux, ChromeOS, Android, or iOS support. | Free website-blocking option; Pro is a one-time purchase. The reviewed official page did not confirm a current numeric price. |
| LeechBlock NG | Free browser-only rules | Browser extension for Firefox, Firefox for Android, Chrome, Edge, and Chromium browsers; not native applications or Safari. | Free. |
| SelfControl | Forceful Mac website block | Selected web destinations on macOS; does not block native applications. | Free and open-source. |
| Session | Mac timer with blocking | Focus sessions and breaks; website and app blocking is a Pro feature for Mac, not Windows or Android. | Free plan; Pro is listed at $4.99/month or $39.99/year. |
| one sec | Pause and reflection | Interventions across supported apps and browsers; native Mac app support differs from Windows browser-extension support. Not every intervention is a hard block. | Free version limited to one app; Pro pricing varies by region. The FAQ lists €3.99/month, €14.99/year, and €99.99 lifetime. |
Freedom’s free plan currently includes multi-device use and custom blocklists, but free sessions are limited to “Start Now” sessions of up to two hours. Recurring sessions, starting later, Locked Mode, and sessions longer than two hours require Premium. The official plan comparison and downloads page distinguish plan features from platform coverage.
Restrict access
Products such as Cold Turkey, SelfControl, or a configured Freedom session can block selected targets where supported. Check operating system, plan, permissions, and target type.
Pause before opening
one sec can insert breathing, delay, or reflection. This creates friction rather than automatically prohibiting access; stricter options and scheduling depend on platform.
Match the app to the way you get distracted
Repeatedly switching browser tabs
Try LeechBlock NG if the distraction is a website in a supported browser. It can apply weekday schedules, time limits, exceptions, and lockdown controls. The vendor’s browser FAQ lists Firefox, Firefox for Android, Chrome, Edge, and Chromium-based browsers, but says Safari is not supported. Because it is an extension, it cannot block a native desktop app; an uncovered alternate browser can also leave a route around a browser-specific rule.
Switching browsers or opening desktop apps
Cold Turkey Blocker supports website and application blocking on Windows and macOS, with configurable schedules and locking features. Pro is a one-time purchase, but check the purchase flow for the current price. Its feature page documents controls such as task-manager and time-setting restrictions; these are configurable features, not universal defaults or a guarantee that every bypass is prevented.
Freedom is worth checking when you need several devices in one focus setup. It lists macOS, Windows, iOS, Android, Chromebook, and Linux, but the enforcement method differs: Chromebook and Linux use browser-extension coverage. Website blocklists can be managed through Freedom’s dashboard, while native app selections must be made inside the Freedom app on each device. Do not assume that selecting a site centrally also selects a native app everywhere.
Blocking websites on a Mac
SelfControl is free, open-source macOS software for blocking selected websites and other internet destinations. Its vendor says an active block remains in place if you close or delete the app or restart the computer. That supports a forceful website-blocking use case, but not native-app blocking, and the vendor does not establish that macOS reinstallation is the only possible bypass.
Pairing a timer with blocking
Session combines timed focus sessions and rests with website and app blocking on Mac Pro. Session is also available on iOS, but the reviewed pricing documentation identifies blocking as Mac-only. Pro supports custom session and break durations, so the timer should not be treated as a fixed 25-minute work and five-minute break cycle.
Reducing automatic checking without banning access
one sec offers interventions for supported apps and browsers, including breathing prompts, delays, and reflection. Its native Mac app can intervene in desktop apps; browser extensions work on supported browsers, including on Windows, but that is not a native Windows app blocker. The FAQ lists a free version for one app, with broader options paid and prices varying by region. It also documents scheduled interventions and iOS recurring blocks, but those platform-specific capabilities should not be generalized to every device.
Set up a blocker without blocking work
Use a short configuration chain before relying on a rule. For a personal setup, you own the blocklist and exceptions. For a team policy, name an administrator who can maintain them.
| Trigger | AI job | Validation | Action and fallback |
|---|---|---|---|
| Known sites during predictable work hours | None required; use a deterministic rule. | Confirm browser, domains, local timezone, permissions, and OR/AND schedule behavior. | Create the scheduled block. If the browser is unsupported, use a compatible extension or a system-level product. |
| Distraction appears in a native desktop app | None required; identify the exact app and platform. | Check application identity, operating-system permissions, and paid-plan requirements. | Configure app blocking. If the launcher or web version remains available, add that route or choose a broader blocker. |
| Automatic checking where prohibition is unnecessary | None required; select an intervention mode based on the desired pause. | Test whether the intervention can be dismissed and whether the feature exists on that platform. | Use one sec for friction. If access must be prevented, move to a documented hard-block feature. |
| Several devices use different access routes | None required; compare coverage by device and target type. | Check whether each device uses a native app or browser extension and whether local setup is required. | Configure each device. If one route is unsupported, reject the candidate rather than assuming synchronization fills the gap. |
Example: weekday website schedule. In LeechBlock NG, enter the distracting domains in a block set, select Monday through Friday, and configure blocks for 09:00-12:00 and 13:00-17:00 in local time. Add work-critical exceptions, grant the extension the site permissions it needs, then test a noncritical target inside and outside a test window. The vendor’s configuration examples show schedule patterns; they are guidance, not an importable template. Check the documented OR and AND rule behavior so the schedule does not block too much or too little. Also test an overnight boundary or daylight-saving change if either matters to the schedule.
For any product, record the decision in a simple note rather than relying on memory. These fields are an illustrative checklist, not a vendor import format:
{
"device": "macOS laptop",
"browser": "Firefox",
"target_type": "website domain",
"required_mode": "weekday scheduled block",
"schedule_local": "09:00-12:00, 13:00-17:00",
"owner": "device user",
"test_result": "blocked during test; exception remains accessible"
}This note describes a configuration record, not a blocked-attempt event or a vendor data schema. If a separate reporting system is ever designed, keep one row per raw observation such as an intervention or blocked launch, separate from a daily summary or CRM contact. Use a database-enforced unique constraint and transactional upsert for any concurrent event-ingestion process; a lookup followed by create is not sufficient. The reviewed vendor pages do not establish a shared public API or standard export for these events.
What focus blockers cannot guarantee
Enforcement depends on the operating system, permissions, plan, and configuration. A browser extension covers its supported browser, not every browser on the device. A native app block may depend on selecting the correct application identity, and alternate launchers or web versions can create a different access route. Test the exact device and intended exception behavior before depending on strict blocking.
Cold Turkey documents configurable controls for task managers and system time settings; confirm that the relevant feature is enabled on the operating system you use. SelfControl documents persistence through ordinary app closure, deletion, and restart. one sec’s intervention invites a decision unless a stricter platform-specific blocking feature is configured. These differences matter more than a generalized “hard to bypass” score.
- Does it cover the native app, website, or both?
- Does it cover every device and browser where the distraction appears?
- Is the schedule or locking feature included in the plan you intend to buy?
- Can you preserve essential work and emergency access with exceptions?
- Have you tested the rule after browser switching or a restart, if those cases matter?
A practical final choice
Start with the least complex option that passes three tests: it covers the device and target, its enforcement matches your need, and its schedule and price are acceptable. For free browser-only rules, begin with LeechBlock NG. For free macOS website blocking, consider SelfControl. Move to a desktop or multi-device product only when you need app blocking, synchronization, a timer, or a platform the simpler tool does not cover.
Check vendor pricing immediately before purchase, especially Freedom’s displayed lifetime promotion, Cold Turkey’s live Pro price, and region-dependent one sec pricing. If a team also needs clearer task ownership and work intake alongside individual focus habits, see ClickUp consulting. This is an adjacent workflow service, not a focus-app integration.