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I spent 5 weeks building a Mac website blocker that even I can't turn off

A few months ago I got frustrated with my own lack of self-control while working. Every website blocker I tried had a panic button or was far too easy to turn off the moment I felt a spike of boredom. So I built Cloister . The idea is simple: a website blocker with no Stop button . Once a session starts it runs to the very end. You can also put blocks on a weekly schedule, with planned breaks if you want them (25 minutes on and 5 off, or 50 and 10). A big part of September was spent try

五维评分

付费意愿
65
需求真实度
50
个人可落地
80
竞争空间
35
新鲜度
55

AI 分析

痛点:现有网站拦截器太容易被关闭或绕过,缺乏真正无法中途停止的强制专注工具。

目标用户:需要强制自律的 Mac 知识工作者、学生、远程办公者以及容易分心的人群。

证据:Every website blocker I tried had a panic button or was far too easy to turn off the moment I felt a spike of boredom. ... One-time purchase (€39 / $39 for one Mac, with multi-Mac and Lifetime options).

变现:一次性买断 License(€39/$39),并提供多 Mac 授权和 Lifetime 版本作为加价项;保留 14 天全功能试用。

MVP:用 2 周做一个 macOS 菜单栏 MVP:只支持预设专注时段和每周计划,开始后无停止按钮,处理休息结束自动关闭未授权标签页;先不接账号、不做云同步、不做复杂数据分析。

竞品:Cold Turkey Blocker、Freedom、SelfControl、Opal、one sec

摘要:作者因现有网站拦截器太容易关闭,用 5 周做了无停止按钮的 Mac 应用 Cloister,并花大量时间防止用户通过退出应用、改系统设置、调时钟或重启绕过。产品采用 €39/$39 一次性买断,提供 14 天试用、多 Mac 和 Lifetime 选项,无账号、无订阅、无追踪。这是明确付费产品案例,但网站拦截器赛道竞争激烈,需求验证仍主要来自作者个人痛点。