| How it works | Blocks websites and applications on your computer, scheduled or started on demand, with locks designed to be hard to undo once a block has begun. | Say what you're working on and pick a length. A small companion sits in the corner of your Mac while the block runs. Drift to a distracting site and he checks in first — one tap takes you back to the sentence you left. Keep going and the page goes behind him until the block ends. |
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| Where it runs | Windows and macOS only. Their FAQ says one product key “will work for both macOS and Windows you own”, and that “Linux, ChromeOS, Android, iOS or other operating systems are not supported”. | macOS 14 or later, a Chrome companion, and iPhone. There is no Windows build and no Android build. |
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| What it costs | One-time, and they say so plainly: “No subscriptions. Pay once, own forever.” There is a free version of Blocker and a paid Blocker Pro licence. We could not read the current Pro figure off their page, so we are not going to print one — check it on their pricing page, linked below. | $79 once, and that is the end of it. There is a $7.99 a month plan if you would rather rent it. 30-day refund, no questions. |
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| When you slip | Nothing you have grown is harmed, because there is nothing to grow. You simply do not get back in until the block ends. That is the entire product and it is not an accident. | Nothing dies. There is no streak to break, no score to keep and no chart of your worst week. Everything you have grown stays grown, and coming back after four days away costs you nothing at all. |
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| Who's with you | Nobody. Cold Turkey is a lock, and it is the best lock on this page. | A character with eyes, actually present while you work. He notices, he asks before he blocks, and he says nothing at all while you're on track. |
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| Rent or own | One-time purchase, no subscription — the same shape as ours. | One payment. Nothing renews, nothing lapses, and there is nothing to cancel. |
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