Website monitoring that runs on your own computer.
Watch pages for changes, check that sites are up and test that sign-up still works, from a free app for Mac and Windows. No account, no subscription, no credits.
Page changes. Watch a whole page, one element or an area, for text or visual changes, as often as every 5 minutes, with a picture of exactly what changed.
These are the app’s own screens, on a Mac.
Why run it on your computer
Free, private, and it reaches what the cloud can’t.
It sees what your computer sees
Checks start from your own computer, so local addresses work: your dev server, your router, a site on your VPN. For pages behind a login, sign in once in Monity’s own browser; the session stays on your computer, encrypted.
Free, and nothing goes to Monity
There is nothing to sign up for and nothing to pay. The app sends no error reports and no usage data, and your monitors and their history stay on your computer.
It keeps checking from the menu bar
Close the window and checks carry on, from the menu bar on a Mac or the system tray on Windows.
Alerts arrive where you already look
A notification on your computer, an email through your own mail server, a message in Discord or Microsoft Teams, or a webhook. Each one opens what it is about.
It updates itself. Each new version is offered in the app, and your monitors and their history carry over.
It moves with you. Export your monitors, their history and your settings to one file, and import it on another computer.
The Mac app is signed. Both Mac downloads are signed and notarized by Apple.
Bring your own AI
Use the AI you already pay for.
AI is optional. Connect a model and it describes each change in plain words, and Ask Monity sets up monitors and answers questions about them. Without one, everything else still works.
Use Claude Code or Codex if they are on your computer, Ollama, your own API key, or a built-in model that downloads once and runs offline.
It works with your AI tools too. Claude Code, Codex and other MCP clients can create and review your monitors, through Monity’s local MCP server.
Desktop or cloud
Same Monity, two places to run it.
What
Monity DesktopFree, on your Mac or Windows PC
Monity in the cloudA free plan, and paid plans for more
Where checks run
On your computer, while it is on and the app is open
On Monity’s servers, around the clock
While your computer is off
Checks wait until you open the app again
Price
Free. No account, no subscription, no credits
A free plan with no card, and paid plans for more
Your monitors and history
Stay on your computer
In your account, with a full-page screenshot and a saved HTML copy of every version
Local addresses
Your dev server, your router, a site on your VPN
Only addresses the internet can reach
Alerts
Desktop notifications, email through your own mail server, Discord, Microsoft Teams and webhooks
Email, Slack, Microsoft Teams, Discord, Telegram, Google Sheets, webhooks and phone push, on every plan
For teams and the public
Team workspaces, public status pages and heartbeat monitors for cron jobs
Installing on a MacOpen the dmg and drag Monity AI to Applications. The app is signed and notarized by Apple.
Not sure which Mac you have?Open the Apple menu and choose About This Mac. “Chip” means Apple Silicon; “Processor” means Intel.
Installing on WindowsIf you see “Windows protected your PC”, choose More info, then Run anyway. The installer is not code-signed yet.
Is Monity Desktop really free?
Yes. There is no account, no subscription and no credits: the app runs on your own computer. If you want checks that keep running while your computer is off, Monity in the cloud has a free plan too.
Do checks run while my computer is off or asleep?
No. Checks run while the app is open. Close the window and it keeps working from the menu bar on a Mac or the system tray on Windows, but nothing is checked while the computer sleeps or is shut down. For checks around the clock, use Monity in the cloud.
What does the app send to Monity?
Nothing. It sends no error reports and no usage data, and it checks for updates without an id of your install. The pages you watch are opened from your own connection, and if you connect an AI model, what it reads goes to the model you chose.
Which Mac download do I need?
Open the Apple menu and choose About This Mac. If it lists a Chip such as Apple M1, M2, M3 or M4, take the Apple Silicon download. If it lists an Intel Processor, take the Intel one.
Why does Windows say “Windows protected your PC”?
The Windows installer is not code-signed yet, so Windows shows that warning the first time. Choose More info, then Run anyway. The Mac downloads are signed and notarized by Apple.
Does the app update itself?
Yes. It offers each new version by itself, and your monitors and their history carry over.
Can I move my monitors to another computer?
Yes. Export your monitors, their history and your settings to one file and import it on the other computer. Passwords and keys are entered again there; saved sign-ins go along only if you choose.
Need checks around the clock?
Monity in the cloud keeps checking while your computer is off, and keeps a full-page screenshot and a saved copy of every version of the page.