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my handwriting plugin hit 10k downloads in 2 months

the plugin allows you to draw or handwrite in your markdown notes in Obsidian, and on pdfs too. includes a few simple tools like a highlighter and lasso feature, among others. it tries to make Obsidian like OneNote, basically im not the first to have had this idea. other Obsidian apps exist that allow handwriting, but there is always a caveat. one popular handwriting app, Excalidraw works by opening a canvas in new tab to draw in - another called Ink works by inserting a block

五维评分

付费意愿

需求真实度

个人可落地

竞争空间

新鲜度

AI 分析

痛点：Obsidian 用户想把手写、批注和 PDF 标注直接做在笔记里而不跳转画布，且手写内容无法转成可搜索的文字和 LaTeX 公式。

目标用户：Obsidian 重度用户中的学生、科研人员、数学和工程从业者，以及需要手写笔记和 PDF 批注的知识工作者。

证据：“my handwriting plugin hit 10k downloads in 2 months”；“handwriting OCR + transcription + LaTeX / math seems an obvious direction to take and has been highly requested”；“although i plan on keeping the app free and open source, a discussion on monetization might be warranted if the costs for transcription for instance become more than i want to handle”

变现：插件本体免费开源并保持良好声誉，OCR、公式识别（由 AI 驱动）作为付费增值项：带自己 API key 免费、托管云服务按次或按月订阅（如 3-5 美元/月含一定额度），或一次性买断的本地模型授权。

MVP：两周内做一个 Obsidian 插件：在笔记内手写和 PDF 批注的画布层，选中手写区域调用视觉模型（GPT/Gemini）返回 LaTeX 或纯文本并插入笔记；本地缓存结果，用户可自填 API key，先验证“手写→公式”这一条最高频路径。

竞品：Obsidian Excalidraw 插件、Ink（Obsidian 手写插件）、OneNote、GoodNotes、Notability

摘要：作者开发的 Obsidian 手写插件在 2 个月内获得 1 万次下载，主打在笔记内零摩擦书写并支持 PDF 批注，区别于 Excalidraw、Ink 的开新画布或插入块方案。社区对 OCR、手写转文字、LaTeX 和数学公式识别“需求极高”，但作者目前计划免费开源，仅在转写成本过高时才考虑变现，因此付费意愿尚未被验证。