Comparison

Happier vs RelayCat编程助手

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Happier

This app acts as a secure bridge for AI coding agents, allowing you to run and continue sessions from your computer on your phone. It supports collaboration, reliable session resuming, and full history access with end-to-end encryption.

Highlights
  • Collaborative coding sessions
  • Support for multiple AI providers
  • Persistent and resumable sessions
  • Seamless switching between devices
  • End-to-end encryption
  • Infinite message history
Features
Read full description

Happier is an open-source, end-to-end encrypted companion app for AI coding agents: Claude Code, Codex, OpenCode, Cursor, Pi, Grok, Gemini, Copilot, Qwen, Kimi, Kilo, Kiro, Auggie. Run sessions on your computer, and continue them from your phone. Use our desktop app or web app, and truly start working from anywhere. YOUR EXISTING SESSIONS? ALREADY THERE. Open any Claude Code, Codex or OpenCode session running on your computer — live, from your phone. Nothing to migrate, nothing to learn. APPROVE FROM ANYWHERE Your agent asks to run a command and you get a push notification with Allow and Deny on it. Sessions waiting on a decision rise to a "Needs attention" group at the top of your list; everything still running gathers under "Working". REVIEW THE DIFF. SEND NOTES TO YOUR AGENTS. Browse every line your agent changed. Mark the exact lines you want addressed, choose which notes to send, and hand them straight back — same session, or a new one. EDITOR. GIT. TERMINAL. ONE TAP AWAY. Chat, files, Git and a live terminal, each its own tab. Open a file to read or edit it, review the diff, manage branches and open a pull request. YOU LOVE THE TERMINAL? WE DO TOO. If you want, you can keep running Claude Code, Codex or OpenCode in their native TUI. Happier mirrors them to every device, so you can follow along, send messages and approve permissions from anywhere — and switch between the terminal and Happier whenever you like. A COLLEAGUE YOU CAN TALK TO The voice assistant watches every running session. Brainstorm the next change, approve a permission or send a message, without picking up the phone. YOUR SESSIONS WORK AS A TEAM A session can start another session, send it messages and read its transcript — so a Claude session and a Codex session can split the work between them. Each one still runs its own subagents, on whichever backend you choose. USE THE SUBSCRIPTIONS YOU ALREADY PAY FOR Happier reuses the subscriptions and logins your existing CLIs already use — Claude, Codex, Cursor, Gemini, OpenCode. No new bill, no double billing, and Happier sells no AI of its own. POOL YOUR ACCOUNTS. KEEP THE SESSION GOING. Link accounts you own into a pool and watch usage and quota resets for every one of them in the app. Nothing switches until you build a pool — once you have, Claude Code and Codex sessions can change account without stopping, moving to whichever member has the most quota left, at most once a turn and never past a reset time the provider has published. OPEN SOURCE. END-TO-END ENCRYPTED. Your messages, prompts and session content are encrypted on your device before they reach a server: AES-256-GCM under a key drawn for that one session, sealed to an account key that is created on a device and never leaves your devices. The relay stores ciphertext and has nothing to open it with. Put the relay on your own hardware with one command — happier relay host install — or reach your computer over Tailscale and use no relay at all. FREE, AND MIT LICENSED The CLI, the mobile apps, the desktop app, the web app and the relay. No seat count, no trial, no feature gate. github.com/happier-dev/happier HOW TO START 1. On your computer: curl -fsSL https://happier.dev/install | bash (Windows: iwr https://happier.dev/install.ps1 -useb | iex) 2. Scan the QR code your terminal prints, with this app. 3. Start a session from the app, or run "happier claude" or "happier codex" in your terminal. REQUIRES A COMPUTER Happier is the client for agents running somewhere you control. It does not run an agent in the cloud, and your repository is never copied to us: the agent reads and writes files on the computer it runs on, and that computer stays the only full copy. Not affiliated with, or endorsed by, Anthropic, Google, GitHub or Cursor.

About

RelayCat编程助手

Safely control your local AI coding agent remotely from your iPhone. Monitor progress, respond to commands, and approve actions without needing to be at your computer.

Highlights
  • Remote AI coding agent control
  • Monitor coding progress
  • Respond to commands
  • Approve actions
  • Sync ideas remotely
Features
Read full description

手机接管本地 AI Coding Agent,在 iPhone 上安全远程控制本地电脑里的AI Coding Agent。看Vibe Coding进度、回复指令、审批操作、同步想法,不必等回到电脑前。

Screenshots

Happier4 screens
RelayCat编程助手4 screens

Verdict

The call

The clearest difference is update cadence: RelayCat编程助手 at every 6 days against Happier's every 5 weeks. Happier's advantage is chart position (#135 vs unranked) and iOS requirement (16.0 vs 18.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Happier ships an update every 5 weeks, RelayCat编程助手 every 6 days. The most recent releases landed on October 7, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 8 level
Happier versus RelayCat编程助手: the parameters behind the verdict, then further details
ParameterHappierRelayCat编程助手
PriceFreeFree
Rating4.4 (10 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings10 — better—
Update frequencyEvery 5 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#135 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.0
Further details — not scored
Size151 MB6 MB
Age rating4+4+
DeveloperLeeroy BrunShenzhen Miyi Technology Co., Ltd.

Customer experience

Happier

All ratings10 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

RelayCat编程助手

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Happier

No in-app purchases

None

RelayCat编程助手

No in-app purchases

Questions

Is Happier free?
Happier is free to download, with no in-app purchases.
Is RelayCat编程助手 free?
RelayCat编程助手 is free to download, with no in-app purchases.
Do Happier or RelayCat编程助手 have ads?
Neither Happier nor RelayCat编程助手 shows ads.
Which is updated more often, Happier or RelayCat编程助手?
Happier ships an update every 5 weeks, and RelayCat编程助手 every 6 days. Most recently, Happier was updated on October 7, 2026 and RelayCat编程助手 on September 22, 2026.

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