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What is catphotoapp?

freecodecamp/catphotoapp — explained in plain English

Analysis updated 2026-08-03 · repo last pushed 2018-11-04

14JavaScriptAudience · generalComplexity · 2/5DormantSetup · easy

In one sentence

A lighthearted Easter egg for the freeCodeCamp community, bringing the classic "cat photo app" coding tutorial joke to life as a working React app.

Mindmap

mindmap
  root((repo))
    What it does
      Interactive cat photo web app
      Remembers browser activity
      Easter egg for community
    Tech stack
      React
      JavaScript
      Lockr library
    Use cases
      Nostalgia for fCC students
      Practice React basics
      Community contribution
    Audience
      fCC beginners
      Coding students
      Community contributors

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Reminisce about learning to code by exploring a real cat photo app.

USE CASE 2

Contribute improvements to a community Easter egg project.

USE CASE 3

Study a simple React app that saves data in the browser.

What is it built with?

ReactJavaScriptLockr

How does it compare?

freecodecamp/catphotoappabdulrdeveloper/chai-aur-reactanasnakawa/kalendae-skins
Stars141414
LanguageJavaScriptJavaScriptJavaScript
Last pushed2018-11-042013-12-07
MaintenanceDormantDormant
Setup difficultyeasyeasyeasy
Complexity2/51/51/5
Audiencegeneralvibe coderdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min

Standard React project setup with no special infrastructure required.

No license information is provided in the README, so default copyright restrictions may apply.

So what is it?

CatPhotoApp is a small, lighthearted project tied to freeCodeCamp, the popular platform where people learn to code for free. If you have ever taken a coding tutorial on freeCodeCamp, you might recognize the recurring joke about building a "cat photo app" as a practice exercise. This repository is the actual, working version of that inside joke, an Easter egg for the community. The project is built using React, a popular tool for building interactive web pages. It also uses a library called Lockr, which helps the app save small pieces of information directly in your web browser. While the README does not go into detail about the specific features, the combination of these tools suggests a simple, interactive web app that remembers your activity or choices as you click around. The README is otherwise sparse, keeping to the basics of what powers the project. The primary audience for this app is the freeCodeCamp community. Beginners who have struggled through early HTML and CSS lessons, which famously involve building pages filled with cat photos, will likely get a kick out of seeing the joke brought to life. It is a fun, nodding reference for anyone who has learned to code through the platform. Contributors who want to help improve the app can submit changes, which are then reviewed by specific members of the freeCodeCamp team for quality assurance. Ultimately, this repository is a minor but charming piece of freeCodeCamp's culture. It is not a complex software tool meant to solve a business problem, but rather a friendly project built for the enjoyment of its coding students.

Copy-paste prompts

Prompt 1
Set up a React app that displays cat photos and uses the Lockr library to save the user's favorite photos in the browser so they persist on reload.
Prompt 2
Build a lighthearted web page inspired by freeCodeCamp's cat photo app joke, where users can browse cat photos and their activity is remembered using local storage.
Prompt 3
Create a simple React component that fetches and displays cat photos, and lets users mark favorites that are saved with Lockr.

Frequently asked questions

What is catphotoapp?

A lighthearted Easter egg for the freeCodeCamp community, bringing the classic "cat photo app" coding tutorial joke to life as a working React app.

What language is catphotoapp written in?

Mainly JavaScript. The stack also includes React, JavaScript, Lockr.

Is catphotoapp actively maintained?

Dormant — no commits in 2+ years (last push 2018-11-04).

What license does catphotoapp use?

No license information is provided in the README, so default copyright restrictions may apply.

How hard is catphotoapp to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is catphotoapp for?

Mainly general.

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