Build, test and run your apps with an AI team
Claude Code, Codex, Antigravity and OpenCode work side by side on your Mac. They write the code, test it on web, iOS and Android in the same window and take it to the store — while you steer from your desk or your phone.
- Web · iOS · Android in one window
- Run it from your phone
- Agents that work while you're away
Your own Claude Code, Codex, Antigravity and OpenCode — your subscriptions, your sign-ins. No install for the demo.
Which database for the cache?
Web, iOS and Android, tested in one window
No Xcode, Android Studio or second browser to keep open. The iOS Simulator, the Android emulator and the browser sit in panes beside the terminals — and the agents use them: they open the app, tap through it, read the screen and fix what they see.
- Agents tap, swipe and type on the simulator and the emulator, and read what is on screen
- Point at a part of a page and hand it to an agent with its HTML and styles
- Real terminals for every repository, a code view that jumps to definitions
- A code graph of every repository, so agents find their way without reading it all
Run the company from your phone
Away from the Mac, the team is still in your pocket: chat with the lead, give a job, answer the decisions waiting for you. It reaches your Mac over your own Tailscale — no cloud in between, off until you turn it on.
- Send a PDF or a Word file from the phone and give the job with it
- Answer decisions and permission questions — or say “don’t ask this again”
- Neo, the lead of your leads: every workspace in one chat, one tap to each
- Notifications for what needs you, with quiet hours
- Reconnects by itself when the Mac’s network comes back
Not a chat window — a team that keeps working
You give the job once. The team plans it, shares it out, checks itself and carries on when you are not looking.
The whole road, from the first idea to the store
One workspace carries the whole road. Agents do the work at every stage; each step that goes out into the world waits for your yes.
Say it once, in any shape
A sentence in the chat, a note, a Word or PDF list from a client, a Bitrix24, GitHub or GitLab issue. It becomes tasks in order — nothing gets retyped.
- A dropped .docx or .pdf turns into a note, then a task list
- Tasks from Bitrix24, GitHub, GitLab, Jira and Linear, on a schedule per workspace
A lead splits it and hands it out
Crown one agent the lead. It writes the plan, draws the diagram, gives each task to the right teammate, waits for their reports and checks them. You get decisions with options and a recommendation — the work goes on meanwhile.
- Features with their plan, diagrams, decisions and wiki in one place
- Agents brief each other; a reply finds its way back to the one who asked
Mira 👑 · Booking, v1
- Availability endpoint → Leo
- Calendar screen → Rio
- Prices with VAT → Juno
- Tests on both phones → Dan
See it before it is built
Agents draw the screens as real pages, all side by side. Click through them with Play, pin a note on the part you want changed, approve one — and later compare it with the built app.
Several agents at once, nothing overwritten
Each task gets its own branch and terminal. You see only what came since your last review, ask for changes, then combine it — or open a pull request.
- Review in rounds: the commits and files since the last one, nothing else
- A key or token in a branch is caught before it is combined
Since round 1: 2 commits · 3 files + calendar/slots.ts ~ booking/screen.tsx Secrets: none
It goes out on your click
Deploys, TestFlight and Play uploads run step by step after you approve the card: what will run, where, and how it is checked afterwards. Keys stay in your Mac's Keychain — agents never see them.
- A VPN or an SSH server when the deploy needs one
- Crashes and store reviews come back as tasks
1. ./deploy.sh staging
2. pm2 restart api
Check: /health → 200 · 60 s
Store pages, then what users say
Shots of the real app at each store's exact size, promo images and short videos made from them. After launch, crashes and store reviews come back as tasks, and a weekly report says how the app is doing.
- App Store and Google Play screenshots of the running app, for you to approve
- Crashes from Sentry and store reviews turned into tasks, each once
- Voice-overs for the videos: draft them on your Mac with VoiceStudiosoonDrafts only — its default voice models are licensed for non-commercial use, your own cloned voice included. The final voice goes through ElevenLabs.
Separate worlds, one window
- Workspaces that never mixTwo companies and a side project side by side: each its own folders, tasks, keys, agents and office.
- An office you can read at a glanceEvery agent at a desk: who works, who waits for you, who is done — and what it is doing right now.
- Neo, the lead of your leadsOne chat over every workspace: what waits for you, who works, what is spent — and a job to each workspace's lead.
- Calm by designThe conversation always beside the work; the office and the tasks one view each; terminals, browsers and docs as many tabs as you need.
- Servers tooOpen a folder on a server over SSH; with tmux there, agents keep working with the laptop closed.
You hold the keys
- A daily budgetSpent? No new jobs are handed out until tomorrow, and you are told at 80%.
- Keeps going past the limitA session at its usage limit continues at the reset, or hands its job to Codex on the spot.
- Nothing public without youDeploys, uploads, posts and paid calls are drafts until you approve them. Agents can't stop the app or delete its data.
Open a folder. Start an agent. Give it a job.
Nothing to set up on a server. Every repository in the folder keeps its branch, changes and terminals; agents talk to each other with catsium agents send.
Now try it yourself
The whole app in your browser, on a sample project: the office, the team chat, tasks, designs, the simulator panes and the phone side. Click anything.
Try the live demoNo install, no account, nothing to sign in to.
Pricing is coming soon
Catsium is in preview. Try every part of it in the live demo while we get the Mac app ready.