Begin with real friction从真实的不便开始
We start where life catches: the upload limit, the uncertain revision, the small task that steals a surprising amount of time.我们从生活真正卡住的地方出发：上传限制、难以确认的修订，以及那些意外吞掉大量时间的小任务。
Software for a more considered future为值得期待的未来，认真做软件
Useful by nature.有用，源于本心。Human by design.为人，精心而作。
Rosemary Island is an independent software and AI company. We make quiet, capable tools that bring advanced technology into everyday life—with care, clarity, and respect for the person using them.Rosemary Island 是一家独立的软件与 AI 公司。我们打造安静而可靠的工具，让先进技术真正走进日常生活——体贴、清晰，也始终尊重每一位使用者。
Explore our products探索我们的产品
Make it fit. Keep it whole.让文件合规，让内容完整。SendReady PDF
See what truly changed.看清真正发生的变化。RendeltaPrivate by default默认保护隐私Your documents stay on your Mac.文档始终留在你的 Mac。
01 · PDF utility01 · PDF 工具
SendReady PDF
Hit the upload limit without breaking the document. Exact-size compression, verified locally.压到上传限制以内，不破坏文档。精确控制大小，并在本机完成验证。
02 · Visual review02 · 视觉审阅
Rendelta
Compare what two PDFs actually render—type, images, diagrams, scans, and layout—entirely offline.离线比较两份 PDF 真正呈现出的差异——文字、图片、图表、扫描件与版式，全部可见。
What we believe我们的信念
AI should arrive as relief, not theatre.AI 应该带来的是从容，而不是喧哗。
We are interested in the quiet moment when technology gives something back: a decision becomes clearer, a repetitive task disappears, or a person gets more room to think.我们关心技术悄然给予人的那些时刻：一个决定变得清晰，一项重复工作消失，或一个人终于有了更多思考的空间。
That future is built through useful details—privacy that does not need explaining, honest outcomes, and software that respects attention instead of competing for it.这样的未来，来自每一个真正有用的细节：无需反复解释的隐私保护、诚实可信的结果，以及尊重注意力而非争夺注意力的软件。
Our way of making我们的创造方式
Keep the intelligence quiet让智能安静地工作
The sophistication belongs underneath. The surface should feel calm, legible, and entirely yours.复杂应该留在底层。呈现在你眼前的，应该平静、清楚，而且完全由你掌控。
Earn trust in the details在细节中赢得信任
Local processing, honest warnings, reversible choices, and careful language are product features—not footnotes.本机处理、诚实提醒、可撤销的选择和准确克制的表达，都是产品本身，而不是附注。
Rosemary Island LLC
An independent software and AI company, exploring how capable technology can become a warmer part of ordinary life.一家独立的软件与 AI 公司，探索如何让强大的技术成为日常生活中更温暖的一部分。
Thoughtful tools for macOS为 macOS 精心打造Privacy-minded by default默认重视隐私Built for people, not metrics为人而做，而非为指标