Fei

Indie Hacker · Building things that matter

❯cat mission.txt

▊

❯ls products/

四高助手纳米蕉AIBullet FlowFoxy CagesLinkFoxImage Converter

01.

About Me

I'm an indie developer passionate about crafting products that solve real-world problems. From health management mini programs to AI-powered tools, I build across platforms — web, mobile, and WeChat ecosystem.

I believe in shipping fast, iterating often, and keeping things simple. Every product I build starts with a problem I've personally experienced or observed.

When I'm not coding, you'll find me exploring new technologies, contributing to open source, or thinking about the next product to build.

Products Shipped

Platforms

∞

Lines of Code

$ cat tech_stack.json

TypeScriptReactNext.jsVueSwiftFlutterPHPPythonJavaNode.jsCloudflare WorkersWeChat Mini ProgramsTailwind CSSPostgreSQLRedisDocker

02.

Products

A collection of tools and apps I've built — from health tracking to AI assistants, productivity apps to fun games.

Four Health Guardian

四高助手

A comprehensive health management tool for tracking and managing hypertension, hyperglycemia, hyperlipidemia, and hyperuricemia — the "four highs" that affect millions.

HealthData TrackingAI Analysis

NanoBanana AI

纳米蕉AI

An AI-powered assistant Mini Program that brings intelligent conversation and creative tools right into the WeChat ecosystem.

AIChatCreative Tools

Bullet Flow

A sleek and intuitive bullet journal & task management app designed for focus and flow. Manage your day with style and efficiency.

ProductivityTask ManagementDesign

Foxy Cages

A fun and challenging puzzle game where you must strategically block a clever fox from escaping. Think ahead, plan your moves, and trap the fox!

GamePuzzleStrategy

LinkFox

A powerful link management and sharing platform. Organize, shorten, and track your links with a clean and modern interface.

Link ManagementAnalyticsSEO

Image Converter

A fast, privacy-first image conversion tool that runs entirely in your browser. Convert between formats, resize, and optimize — no uploads needed.

Image ConverterImage ResizerImage OptimizerBrowser-based