Skip to content
Back to the path

Unit 2 of 7

Open

Day 2 — A real build runs

What you have afterwards: The project starts on a device or in the browser — empty, but real.

Goal

You set the project up and get it running once, all the way through.

Understand briefly

An app is more than a wrapped website. Interface and core assets belong in the local bundle, navigation has to be thumb-friendly and respect safe areas, the back gesture, the keyboard and resuming. A wrapper around a remote website saves build time today and costs you offline quality and review safety tomorrow. Also separate interface and domain logic from the start — that is the cheapest extensibility you can get.

Follow along

Paste this prompt into the AI tool you work with:

I am setting up a new app project. Target platform: [PLATFORM]. Language/framework: [YOUR CHOICE].

1. Create the project and explain every file you generate in one sentence.
2. Set up navigation with two screens that respects safe areas.
3. Split interface and domain logic into separate folders and justify the cut.
4. Give me the exact command to run the project locally.

Change nothing outside these four points.

Build it yourself

Actually start the project once — on your device or in the browser. Create separate environments and, if your platform requires it, the app identifier and signing.

Verify

Only tick a box once you have really checked it. These criteria are the only way to finish this unit.

0 of 3 confirmed

Still open: 3 criteria

Self-check

Three questions about decisions you made today. There are no points and no grade — only the why. Every answer can be changed.

1. You consider building your app as a shell around an existing website. What is the honest price?
2. When have you seen your first real build?
3. How do you measure whether your navigation is thumb-friendly?

0 of 3 answered

Next step

Tomorrow this empty shell gets its core loop.

Next: Day 3 — Your core loop works

隐私设置

在你同意后,PostHog EU 会统计哪些页面被打开,并额外录制你的会话:鼠标移动、点击、滚动以及页面呈现的内容会被保存为可回放的重建记录。你输入的文字在发送前会被遮蔽。登录、注册、密码找回、创始人聊天、订阅邮件输入框、你的邮箱显示、你的测验答案以及检查清单的内容完全不会被录制;在登录和注册页面,录制处于暂停状态。网址始终不带查询参数保存。此外还会处理一个随机设备标识以及 IP 地址等技术连接数据。除此之外,还会统计少数严格定义的使用事件:文章被读到什么程度、使用了哪个文章模块、点击了哪个行动号召,以及订阅邮件的结果如何。仅传输固定清单中的取值——不含输入内容,也不含自由文本。 了解更多隐私信息

未经你同意,不会加载任何分析代码,也不会进行录制。你可以随时撤回:撤回会立即停止采集;此前已采集的数据可能已经传出,并会在存储期限后删除。