# Cali Castle and Cali Baby

> The bilingual public site of design engineer Cali Castle and the official product, support, and legal information for Cali Baby, a baby tracker by Zolplay.

Chinese pages use unprefixed URLs. English versions use `/en`. Prefer the page matching the user’s language, and use each page’s canonical URL when citing it.

Cali Baby is a Health & Fitness app for parents, guardians, and caregivers. Version 1.0.0 launched on the App Store on August 15, 2026. The app is free to download with optional Cali Baby Pro purchases.

It supports iPhone and Apple Watch, requires iOS 18 or later, and is available in English and Simplified Chinese. Cali Baby keeps kicks, contractions, feeding, sleep, diapers, and growth in one calm place. Start without an account, then log common care from the Lock Screen, Siri, or Apple Watch.

Cali Baby records and organizes everyday observations. It does not provide diagnosis, treatment, emergency services, or a substitute for professional medical care.

## Cali Baby

- [Cali Baby: Baby Tracker](https://cali.so/en/calibaby): Official English product page with features, screenshots, platform requirements, and the App Store download.
- [Cali 宝宝](https://cali.so/calibaby): 官方中文产品页，包含功能、应用画面、系统要求与 App Store 下载入口。
- [Cali Baby on the App Store](https://apps.apple.com/app/id6769728441): Official Apple listing for the current app version, compatibility, pricing, and App Privacy details.
- [Cali 宝宝｜帮助与支持](https://cali.so/calibaby/help): 查找家庭同步、备份、语音记录和账号删除帮助，了解 Cali 宝宝，或联系我们。
- [Cali Baby | Help and Support](https://cali.so/en/calibaby/help): Get help with Family Sync, backups, voice records, and deletion, learn about Cali Baby, or contact support.
- [Cali 宝宝隐私政策](https://cali.so/calibaby/privacy): 了解 Cali 宝宝如何处理设备记录、家庭同步、语音、分析、诊断和删除请求。
- [Cali Baby Privacy Policy](https://cali.so/en/calibaby/privacy): Learn how Cali Baby handles device records, Family Sync, voice processing, analytics, diagnostics, and deletion requests.
- [Cali 宝宝使用条款](https://cali.so/calibaby/terms): 阅读 Cali 宝宝关于账号、家庭共享、Cali Baby Pro、医疗边界和服务区域的使用条款。
- [Cali Baby Terms of Use](https://cali.so/en/calibaby/terms): Read Cali Baby's terms for accounts, Family sharing, Cali Baby Pro, health boundaries, and service regions.

## Cali Castle

- [Cali Castle](https://cali.so/en): Design Engineer. Agent Orchestrator. Creative Director.
- [Cali Castle](https://cali.so/): 设计工程师、Agent 指挥官、创意总监。
- [Writing](https://cali.so/en/blog): Essays by Cali about design, engineering, products, and the people and ideas that matter along the way.
- [写作](https://cali.so/blog): Cali 关于设计、工程、产品，以及一路上在意的人和事的文章。
- [Photos](https://cali.so/en/photos): Moments Cali has kept from work, life, and everywhere in between.
- [照片](https://cali.so/photos): Cali 在工作、生活和旅途中留下的一些瞬间。
- [Projects](https://cali.so/en/projects): Products, open-source tools, and small experiments I have made over the years. Some useful, some playful, all made with care.
- [项目](https://cali.so/projects): 这些年做过的产品、开源工具和小实验。有些实用，有些只是好玩，但每一个我都认真做过。
- [AMA](https://cali.so/en/ama): A one-to-one conversation about AI-native work, product strategy, engineering, startups, career moves, and building products.
- [一对一](https://cali.so/ama): 从产品设计、工程、职业到独立开发、创业、出海、英语学习与 AI 工作流，用一小时聊清楚怎么判断、怎么取舍、下一步做什么。

## Writing

- [I Decided to Stop Buying SaaS](https://cali.so/en/blog/we-decided-to-stop-buying-saas): AI didn’t make maintenance free. It gave us the freedom to build. We used to buy software and adapt to it. Now we shape it around how we work.
- [我决定，不再买 SaaS 了。](https://cali.so/blog/we-decided-to-stop-buying-saas): AI 没有让维护成本消失，很好的提供了自建的自由度。之前是我们要去购买和学习软件，现在是随心所欲定制化。
- [2023 Year in Review: My Unusual 28th Year](https://cali.so/en/blog/2023-year-in-review): With one week left in 2023, I want to look back at the year before I turn toward 2024.
- [2023 年终总结，致我不同寻常的 28](https://cali.so/blog/2023-year-in-review): 眼看还有一周的时间 2023 就正式要结束了，在期待与仰望 2024 的到来之前，我先来对今年的我进行一次年终总结吧。
- [How to Clone This Site and Launch a Blog for Free](https://cali.so/en/blog/guide-for-cloning-my-site): Historical tutorial for the 2024 v2 stack. It does not apply to the current v3 site.
- [如何复刻本网站，零氪快速建博客](https://cali.so/blog/guide-for-cloning-my-site): 【历史教程】本教程只适用于 2024 年的 v2 技术栈，不适用于当前 v3 网站。
- [React or Vue? My Take on the State of Web Development](https://cali.so/en/blog/react-or-vue-my-take-on-web-dev): I've worked in frontend for years. Here is how I see React.js and Vue.js, based on the products, tools, and communities around them.
- [React 还是 Vue？我对 Web 前端现状的看法](https://cali.so/blog/react-or-vue-my-take-on-web-dev): 我做了多年 Web 前端。这篇文章从框架、工具和社区出发，聊聊我眼中的 React 和 Vue。
- [I'm Going to Be a Father](https://cali.so/en/blog/im-gonna-be-a-father): Our baby is due in about a month, and I'm about to take on the biggest responsibility of my life: becoming a father.
- [我要当爸爸了](https://cali.so/blog/im-gonna-be-a-father): 距离宝宝出生还有一个月左右，我也将迎来人生中职责最大的一次升级：当爸爸。
- [Eight Laws for Becoming an Excellent Engineer](https://cali.so/en/blog/8-laws-to-a-successful-engineer): Technical skill alone does not make an excellent engineer. These are the eight principles and values that have helped me along the way.
- [成为优秀工程师的八大法则](https://cali.so/blog/8-laws-to-a-successful-engineer): 技术能力并不足以定义一名优秀工程师。这八条原则和价值观，是我一路走来最受用的提醒。
- [How to Add RSS to a Next.js App Router Site](https://cali.so/en/blog/how-to-add-rss-to-your-nextjs-app-router): A guide to adding an RSS feed to a Next.js website built with the App Router.
- [如何给你的 Next.js（App 路由）应用添加 RSS](https://cali.so/blog/how-to-add-rss-to-your-nextjs-app-router): 本文将详细讲述如何添加 RSS 功能到你的 Next.js（app 路由）网站当中。
- [Do Buttons Really Need Pointer Cursors?](https://cali.so/en/blog/do-buttons-need-pointer-cursors): Buttons are everywhere, yet native macOS and Windows apps share one detail: hovering over a button does not turn the cursor into a pointing hand.
- [按钮真的需要手指光标吗？](https://cali.so/blog/do-buttons-need-pointer-cursors): 按钮在如今的网站中随处可见，但不知道你有没有发现，在 macOS 和 Windows 的原生应用中，按钮们都有一个共同点：鼠标放上去不会变成“小手指”。
- [How to Protect Your Site With Upstash](https://cali.so/en/blog/how-to-protect-your-site-with-upstash): Someone was deliberately hammering one of my APIs and driving up my Redis bill. I used Upstash rate limits and IP blocking to stop them.
- [如何用 Upstash 为网站保驾护航](https://cali.so/blog/how-to-protect-your-site-with-upstash): 有人持续高频请求我的接口，推高了 Redis 费用。我用 Upstash 的限流和 IP 封锁解决了这个问题。
- [Hao Chen: An Open Heart That Lit the Way in Tech](https://cali.so/en/blog/an-ode-to-hao-chen): Hao Chen spoke his mind, shared what he knew, loved technology, and stood by his principles. He was my mentor. He is gone, but what he gave us remains.
- [陈皓：以磊落之心，点亮科技之光](https://cali.so/blog/an-ode-to-hao-chen): 陈皓，他直言不讳，他热爱分享，他痴迷技术，他保持原则。他曾是我的导师，也是我的朋友。如今，他离开了这个世界，但他没有离开我们。

## Newsletter archive

- [Cali.so Monthly Update Newsletter 01](https://cali.so/en/newsletters/1): The read-only archive of Cali.so's first monthly update from June 2023.
- [Cali.so 动态更新 Newsletter 01](https://cali.so/newsletters/1): Cali.so 在 2023 年 6 月发布的第一期动态更新存档。

## Projects

- [Cali Baby](https://cali.so/calibaby): You don’t have to remember every feed.
- [Zolplay Website](https://zolplay.com/): I designed and built Zolplay's company site with a simple layout and grain texture.
- [Well Word](https://wellwordgame.com/zh-CN): A 5×5 English word game.
- [ChatGPT Slack Bot](https://github.com/zolplay-cn/chatgpt-slack): An early ChatGPT bot built for Zolplay's Slack.
- [Raycast · Apple Developer Docs](https://www.raycast.com/cali/apple-developer-docs): Search Apple Developer docs from Raycast.
- [Raycast · Brightness Control](https://www.raycast.com/cali/brightness-control): My first Raycast extension, built to control screen brightness.
- [BuckBank](https://twitter.com/thecalicastle/status/1663601110916149251): A Slack economy where people traded emoji stocks, sent money, and spun a lucky wheel.
- [PopMenu](https://github.com/CaliCastle/PopMenu): An open-source iOS pop-up menu library from my college days.

## Optional

- [Chinese RSS feed](https://cali.so/feed.xml): Latest Chinese writing in RSS format.
- [English RSS feed](https://cali.so/feed.en.xml): Latest English writing in RSS format.
- [Sitemap](https://cali.so/sitemap.xml): Complete index of canonical public URLs and language alternates.