Scream2Wish: Break a genie lamp by screaming to wish

Rajnish Mehta — Mon, 13 Apr 2026 07:37:09 +0000

This is a submission for the DEV April Fools Challenge

What I Built

I built Scream2Wish, an Android app where you have to literally scream at your phone to make a wish.

The app forces you through a fake login, then shows a genie lamp. The louder you scream, the more the lamp breaks. If you stop even for a second, it fully resets. Once you finally break it, a random character comes out (including mermaids… from a genie lamp, obviously).

You can then type a wish and a note. That data gets sent through a Cloudflare Worker → GitHub Actions pipeline and stored permanently in a public GitHub repo. In return, you receive a random stranger’s note.

It solves nothing. It wastes your voice. It permanently stores your questionable wishes online.

Demo

📱 Try It Yourself
Download the app, scream at your phone, and see what happens.
🧞 Download APK 🧜🏻‍♀️

🌐 Wishes Board:

Scream2Wish — Live Wishes Board

Every wish screamed into the void appears here in real time. Read what strangers wished for.

rajnishkmehta.github.io

Code

The project is entirely open-source under the MIT license.

Main repo (App + Worker + Website):

RajnishKMehta / Scream2Wish

An Android app where you scream to break a genie lamp and send your wish to GitHub

Scream2Wish

A submission for the DEV April Fools Challenge 2026

📱 Download APK · 🌐 Wishes Board · 📦 Wishes Repo

What Is This?

Scream2Wish is a completely 100% useful👀, mildly chaotic Android app that forces you to scream as loud as you can to break a genie's lamp and only then lets you make a wish.

Your wish gets sent to the internet via a Cloudflare Worker → GitHub Actions pipeline and lives forever in a public repo. In return, you get to read a random stranger's note. Whether that's comforting or unsettling is entirely up to you.

It is a fun project made for timepass and learn.

Download

Install on Android 10+ devices (sideloading required enable "Install from unknown sources" in settings).

The Full Experience

Step 1 — Permissions Gate

The app opens with an animated permission screen asking for microphone access (to detect your screams) and…

View on GitHub

If you're reading the code carefully, you might notice something… off 👀

🧩 Hidden Bug Challenge

I intentionally left a tiny bug in this project.

Most users won’t notice it. But if you do, you can’t unsee it.

Status: 🟡 Not fixed yet

(Will update this section once someone finds and fixes it)

Your mission:

Find it
Fix it
Open a PR

If you get it right, I’ll merge it.

No rewards. Just glory.

(Hint: It works when you enter it… but not when you come back.)

How I Built It

Technical Pipeline

App (Expo + React Native) Detects user screams in real time using microphone amplitude.
API Layer (Cloudflare Worker) Receives wish + note + name and securely forwards it.
Trigger (GitHub API) Worker fires a repository_dispatch event.
Processing (GitHub Actions) Generates a unique ID, saves the wish as JSON, and updates index.json.
Display (Website) Wishes become publicly visible via GitHub Pages + Vite.

Tech Stack

App: Expo + React Native
Backend/API: Cloudflare Workers
Website: Vanilla TypeScript + Vite (GitHub Pages)
Storage: GitHub (via Actions pipeline)
Local Storage: react-native-mmkv
Audio: expo-audio (scream detection) & expo-speech (genie voice)

Good luck to your vocal cords. You’ll need it.

Forem: Rajnish Mehta