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Happy: Codex & Claude Code App

Happy: Codex & Claude Code App

Codex & Claude Code on the go

991 ratings
65 reviews
#87 in free Developer Tools
📊 Productivity
🛠️ Developer Tools
Free
In-App Purchases

Details

  • Released
  • Updated
  • July 21, 2025
  • March 27, 2026

Features

Developer

Bulka, LLC
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📊no. 87
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About

This app provides a secure mobile interface for AI coding assistants, allowing you to continue sessions and monitor progress from anywhere. It features end-to-end encryption and a zero-knowledge architecture for ultimate privacy. Seamlessly switch between desktop and mobile for uninterrupted AI coding.

✓Seamless desktop and mobile session continuation
✓Push notifications for AI tasks
✓Offline access to conversation history
✓End-to-end encryption for code privacy
✓Real-time streaming of AI responses
✓Zero-knowledge architecture
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What's New in Happy

1.7.0

March 27, 2026

*New Session Composer* - Rebuilt session creation screen — pick machine, agent, model, permissions, and worktree from one place. Drafts persist across navigation. Offline machines visible with "last seen" timestamps. *Git Worktrees* - Create new or select existing worktrees when starting sessions. Smart cleanup on delete/archive (checks for uncommitted changes and shared sessions first). *Voice Assistant* - 1 hour free, then subscription required. Bring-your-own ElevenLabs agent option in Settings > Voice. Cross-session support, prompt queuing during speech, and VAD-based speaking indicators. Fixed stuck "connecting" state. *Multi-Agent* - OpenClaw added as 4th agent. Updated model names (Claude opus/sonnet 4.6, Codex gpt-5.3/5.4). "Bypass" renamed to "Yolo" with sandboxed badge. Auto plan-mode switching. Dynamic model/mode selectors from backend metadata. *Session Management* - Long-press/right-click quick actions (Details, Archive, Copy Metadata). Instant archive (no confirmation). Delete always available. Disconnected sessions show copyable resume CLI command. Push notifications now deep-link to sessions. CLI availability shown on machine detail. *Rendering* - Codex patches show full inline diffs. Markdown tables support rich formatting. Links work on web. Internal tool calls (thinking, ToolSearch) hidden. Bash commands render correctly for all agents. *Performance & Reliability* - Expo SDK 55. Mobile web Enter key inserts newline.

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Subscription plans

Plus Plus Monthly

Plus Plus monthly subscription

$19.991 Month
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Charts

Top Free

📊 87

Developer Tools

The app has maintained its position at 87 recently.

Last updated on August 8, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Amazing - one of the only reliable ways to code from my phone

It’s fantastic. New update to the UI in app could have used some testing before implementing. Initial sessions are not having line breaks which is just annoying UX

overall this solves a big pain until Claude finally creates an easier way to seamlessly go between phone and computer while keeping sessions on the end server
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CurranvwCurranvw

Godly

God
Youssef GuessousYoussef Guessous

Slop

Sorry but, the app is slop.
NickolasaaaaNickolasaaaa

Overall very good

Awesome app. But yolo features still not true yolo, asking permission for bash operations
peter zergpeter zerg

crash report

It will crash when you click on the file list.
I‘m talking about the modified Git file displayed.
EatBadAppleEatBadApple
See 60 more reviews

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FAQ

What does Happy Coder do?

Happy Coder is a secure mobile companion app that allows you to continue your AI coding sessions with Codex and Claude Code from anywhere. It enables you to monitor AI progress, receive notifications, and access conversation history, all while ensuring your code remains private through robust encryption.

How does the encryption work?

The app utilizes end-to-end encryption, similar to Signal, with a zero-knowledge architecture. This means your encryption keys never leave your device, and all data is encrypted before transmission, ensuring that neither the app developers nor any third parties can access your code or conversations.

What are the key features of this app?

Key features include seamless continuation of coding sessions between desktop and mobile, push notifications for important AI updates, offline access to your chat history, real-time streaming of AI responses, and a strong emphasis on privacy with end-to-end encryption and a zero-knowledge design.

Is this app free to use?

The app is free to download and use, but it does offer in-app purchases. It functions as a companion to existing Codex or Claude Code installations on your computer, requiring a setup with a CLI tool.

Who is this app designed for?

This app is perfect for developers who need to keep an eye on long-running AI coding tasks while away from their computers, require secure access to sensitive code discussions, or simply value a high level of privacy and open-source transparency in their development tools.