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I'm not a developer. I built a reading app anyway, 14k people in Korea use it, and yesterday I opened it up to English readers. Here's what I learned

Background: I'm a non-developer in Seoul. I read a lot and I hate book clubs. But every time I underline a sentence I want to know if anyone else stopped at the same line. No app did that, so I built one. It's called rlog (reading log). The idea is simple. You log the page you're on and leave a short note. Your note reaches other people reading the same book, and theirs reach you. Spoiler protection is automatic: you only see notes up to the page you've logged. No names, no profile photos,

五维评分

付费意愿
30
需求真实度
85
个人可落地
80
竞争空间
55
新鲜度
70

AI 分析

痛点:读者想在同书同页看到他人的批注,但既怕被剧透、又不想暴露身份,现有读书社交应用都做不到

目标用户:重度读者、排斥书友会的独读者,尤其是跨语言阅读的读者群体

证据:14k signups, ~1.6k new in the last 30 days / 60k reading logs on ~8k titles / 7 paying subscribers (yes, seven. It's a cosmetic subscription for color themes, I never expected it to earn anything) / The spoiler gate turned out to be the killer feature, not the social part.

变现:主题配色等外观订阅只是象征性收入,真正的变现应放在跨语言共读社区(自动翻译的全球同书批注流)、高级统计/导出、按书或按作者的内容合作、以及出版社/读书会的B端白标

MVP:2周MVP:用现成图书元数据API(如Open Library/Google Books)做书籍搜索,只保留三个核心功能——按页码提交短批注、自动剧透门控(只显示已读页码之前的批注)、匿名HEX色身份,加一层机翻把中英韩日批注合成同一条书内时间线

竞品:Goodreads、The StoryGraph、Literal、Bookly、Fable、Hardback、Bookmate

摘要:一位韩国非开发者用6个月独立做出读书批注应用 rlog:用户记录所读页码并留下短评,只看到自己进度之前的批注(自动防剧透),身份是匿名HEX色块。上线约6个月拿到1.4万注册(近30天新增1600)、8千本书上6万条批注、1.2万本标记读完,但只有7个付费订阅,且是配色主题这类装饰性订阅。作者认为真正的杀手锏是剧透门控而非社交,而自动翻译批注(韩日中英)是它走出韩国的关键。