Every app, reviewed honestly
Nine apps tested. Full disclosure: I built Hugo, so I've flagged where that creates bias. Every other review is based on personal testing.
Best free option for unbypassable blocking
SelfControl is the free nuclear option. Add sites to a blocklist, set a timer, hit start. Once running, nothing undoes it - not restarting the app, not restarting your Mac, not deleting the app. Best for people who know exactly what distracts them and want a zero-cost permanent block.
Strengths
- Completely free and open source
- Genuinely unbypassable - survives restarts
- Simple, zero-friction setup
Limitations
- No scheduling or automation
- No app blocking, websites only
- Must predict distractions in advance
Best for maximum enforcement with one-time pricing
The most aggressive dedicated blocker available. Blocks websites, apps, and even the entire internet on a schedule. On Mac it's strong but not as locked-down as its Windows version. The one-time pricing is compelling for users who want strict enforcement without ongoing costs.
Strengths
- One-time purchase, no subscription
- Blocks websites and desktop apps
- Scheduling and recurring blocks
Limitations
- Mac version less strict than Windows
- No mobile support
- Dated UI
Best for cross-platform blocking with scheduling
The most popular option with over 3.5 million users. Clean interface, scheduled sessions, and Locked Mode that prevents you from ending a session early. Works across all your devices. The limitation is a static blocklist - you have to predict every distraction in advance.
Strengths
- Cross-platform (Mac, Windows, iOS, Android)
- Locked Mode prevents early session exit
- Recurring schedules and session library
- 3.5M+ users, proven track record
Limitations
- Static blocklist - must predict distractions
- No context awareness
- Can bypass without Locked Mode
Best Mac-native option with multiple profiles
A solid Mac-native choice with profiles that let you switch between different blocking configurations instantly. Supports app blocking alongside website blocking and integrates a Pomodoro timer. The tiered one-time pricing ($19 basic, up to $129 for full features) suits users who want to avoid subscriptions.
Strengths
- Multiple blocking profiles
- App blocking and website blocking
- Pomodoro timer integration
- One-time pricing
Limitations
- Mac only
- Static blocklist model
- Smaller user base
Best budget option for basic website blocking
A lightweight, affordable Mac blocker for users who want simple website blocking without complexity. The low price and clean interface make it a good starting point. Feature set is basic - no app blocking, no advanced scheduling - but covers the essentials for straightforward distractions.
Strengths
- Very affordable subscription
- Clean, simple interface
- Allowlist and blocklist modes
Limitations
- Mac only
- Basic feature set
- No app blocking
Best for focus-enhancing audio
A completely different category - Brain.fm is focus music powered by audio neuroscience. It uses patented neural phase locking technology to help your brain sustain focus. Not a distraction blocker, but pairs well with one. Works best for people who find silence distracting but music with lyrics too engaging.
Strengths
- Science-backed functional music
- Patented neural phase locking tech
- Deep work, sleep, and meditation modes
Limitations
- Not a blocker - no enforcement
- Subscription cost on top of other tools
- Effectiveness varies by person
Best for Pomodoro-style work with time tracking
Session is a beautifully designed Mac app that combines Pomodoro-style work sessions with website blocking and time tracking. It's primarily a session timer, but the built-in blocking covers most use cases. The detailed reports on how you spent your time are genuinely useful for improving work habits.
Strengths
- Beautiful, minimal Mac interface
- Built-in time tracking and reports
- Website blocking add-on included
- Free tier available
Limitations
- Mac only
- Blocking less strict than dedicated tools
- Primarily a timer app
Best for knowledge workers whose context changes daily
Hugo (full disclosure: I built it) uses AI to evaluate every new tab against your session goal. Instead of a static blocklist, you set your goal and Hugo figures out what's relevant. YouTube is allowed when you're watching a tutorial, blocked when you're writing. The justification prompt creates a pause when you drift - enough to interrupt autopilot without locking you out.
Strengths
- No blocklist to maintain - AI decides by context
- Same URL can be allowed or blocked based on goal
- Blocks off-task desktop apps too
- Justification prompt breaks autopilot without hard locks
Limitations
- Mac-only, Chrome extension required
- Subscription pricing
- Requires internet for AI evaluation
- Occasional AI misjudgements
Best for structured daily planning with blocking built-in
Serene combines a daily planner with website and app blocking. You plan your day, set your tasks, and Serene enforces blocking during your focused blocks. The planning layer distinguishes it from pure blockers - it helps you decide what to work on, not just what to avoid. Good for people who want structure around their whole work day.
Strengths
- Daily planning interface built in
- Website and app blocking included
- Session goals and task lists
- Clean design
Limitations
- Mac only
- Static blocklist model
- Less active development
How to choose
💸
Want free with no compromises?
SelfControl. Unbypassable, zero cost. Works if you know your specific distractions in advance.
🔒
Want the strictest possible enforcement?
Cold Turkey ($39 one-time). Blocks apps, not just websites. One-time price. Weaker on Mac than Windows but still the toughest option.
📱
Work across Mac, iPhone, and other devices?
Freedom ($39.99/yr). The only major option with true cross-platform sync and Locked Mode.
🤖
Context changes throughout the day?
Hugo ($99/yr). If you can't maintain a static list that's always correct, AI-powered context evaluation is worth it.
🧠
Have ADHD or attention-related challenges?
Different apps work very differently for ADHD brains. See our
ADHD focus tools guide for tailored recommendations.
🎵
Silence kills your focus?
Brain.fm. Pair it with any blocker for the complete setup - blocking removes distractions, Brain.fm maintains the focus state.