CodeShell

A secret app with private chat, media, audio/video calls, disguised as learning platform AI-assisted study across Android and web.

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Inspiration: Problem: Many people want a private place to learn and communicate, but most tools split that into separate apps: one for study, one for chat, one for calls, and another for desktop access. CodeShell explores a more discreet pattern: a learning surface first, with private communication tools available when needed.

The product is aimed at users who want:

  • A quiet learning-first interface.
  • Private chat sessions.
  • Modern media and calling features.
  • Cross-device access through Android and web.
  • Less exposed interaction patterns than conventional social apps.

Solution

CodeShell combines learning screens, AI-assisted tutor behavior, private chat, media sharing, profile identity, and real-time calls into one product. The two Android flavors tailor the learning experience:

  • Coding flavor: coding lessons and coding tutor prompts.
  • Grammar flavor: grammar lessons and grammar tutor prompts, including Hinglish explanations with English examples.

The web app extends the concept to desktop/PWA use with a disguised coding tutorial page and a hidden terminal panel for chat.

What it does: CodeShell is a privacy-conscious learning and communication project. It includes two native Android flavors, coding and **grammar, plus a companion React/Vite web app. The Android app combines a disguised learning interface with private conversations, media sharing, profile photos, audio/video calls, and screen sharing. The web app shares the same Firebase backend and provides a PC/PWA-style disguised coding tutorial surface with a hidden terminal chat panel.

How we built it: I am not a professional programmer. I just know basic of codex AI coding agent and few other AI assistant, giving it simple English commands can generate, edit, create files, code etc. I found Codex as a main architect to bring my idea of this project into reality. I started with chatGPT by giving simple English instruction, then pasted the generated code into android studio. during OpenAI Build Week, I used Codex with GPT-5.6 to turn CodeShell from a working private learning/chat project into a more polished cross-platform product. Build Week work included call UX improvements, video-call screen sharing, mini call views, call banners, audio route behavior, reconnect handling, adaptive media previews, persistent drafts, profile photo upload/crop/cache/delete flows, share-panel integration, Android lifecycle fixes, Firebase rules updates, and compile validation for both Android flavors.

Challenges we ran into: Most of the challenges came when I was using Chat GPT copy-paste progress. many time the generated code contained error, then I again move to chat and got corrected code. with codex, it fixed almost all of these issues by taking over things.

Accomplishments that we're proud of: The result is a working native Android app plus a web companion that demonstrate how Codex can support a real product sprint: inspecting an existing codebase, planning changes, implementing Kotlin/Compose/WebRTC/Firebase/React updates, debugging real-device behavior, and keeping the project aligned with no-cost platform APIs where possible.

What's next for Untitled: Future Improvements To Mention

  • Status/story video publishing with selected audience, story rings, full-screen viewer, progress bars, and viewer tracking.
  • In-app player for YouTube Shorts, Instagram Reels, and similar short-video links.
  • Audio/video calling in the web app.
  • More advanced AI learning workflows for coding and grammar.
  • Hosted demo or judge-friendly APK/test account setup.
  • end-to-end encryption on chat

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