How to monitor a Lovable app for free

You built something with Lovable, published it, and shared the link. Now what? Most people check it now and then by opening it themselves. That works until the day it breaks at 2 a.m., or while you're on holiday, or in a way that only shows up after logging in.

Monitoring is simply having something check your app for you, all the time, and tell you when it breaks. This guide covers what's worth monitoring for a Lovable app specifically, and how to set it up for free.

What can go wrong with a published Lovable app

It helps to know what you're watching for. Lovable apps are React apps: the page is drawn in the visitor's browser by JavaScript, and data usually comes from Supabase (either Lovable's built-in backend or a Supabase project you connected). That shapes how they fail.

1. The site doesn't answer at all

The classic outage: hosting problems, an expired domain, a broken custom-domain setup, or an expired SSL certificate. Visitors get an error page or a browser warning.

How to catch it: a regular uptime check that opens your address every few minutes and looks at the response.

2. The page answers, but it's blank

The most Lovable-specific failure. The server sends the page just fine — status 200, everything "up" — and then the JavaScript crashes before anything is drawn. Common causes are a missing Supabase setting, a bad change from the AI, or a data shape the code didn't expect. We wrote a full guide on fixing a blank white screen in Lovable.

How to catch it: a check that opens your app in a real browser and looks at what's actually on screen. A simple "is it up?" check can't see this.

3. The backend stops answering

If your app uses a Supabase project on the Free plan, Supabase pauses it after a week of low activity. The site still opens; logins and data don't work. Supabase itself can also have an outage, like any service. (See Supabase project paused.)

How to catch it: something that knows which Supabase project your app talks to and checks whether it's paused — plus an alert when Supabase itself is down. You can see Supabase's live status on our Supabase status page.

4. A publish breaks something

You (or the AI) change something, publish, glance at the home page, and move on. Meanwhile a deeper page, the sign-in, or the checkout is broken.

How to catch it: a check that notices a new publish and runs a full check right after.

5. A secret key ends up in public code

Anything in your app's frontend code is readable by anyone who opens it. If a secret key — Stripe, OpenAI, a Supabase service_role key — ends up there, it can be copied and abused. Lovable has a security scan in its publish flow that looks for this kind of problem, but code changes after the scan, and keys can sneak in. (See exposed API key in a Lovable app.)

How to catch it: a scan of your app's public code for known key formats, regularly and after each publish.

6. Slow, then broken

Pages getting slower can be an early sign of trouble, or simply a bad user experience on its own.

How to catch it: recording how long each check takes, and alerting when it stays slow.

A free setup in two minutes

Here's the setup with Pingbuddy. The Free plan covers up to 20 sites, so a typical Lovable builder with a few projects doesn't need to pay anything.

Step 1: Add your app

Go to the Pingbuddy home page, paste your app's address — your lovable.app address or your custom domain — and press Watch my site. Sign in with your email (you get a login link, no password) or with Google.

Your app is checked right away and then every 5 minutes.

Step 2: Choose where alerts go

Email works immediately. For alerts on your phone, connect Telegram from the dashboard: press "Get alerts in Telegram", start the bot, and you're done.

If you'd rather not sign up on a website at all, you can do everything from Telegram: start our bot, send /add yourapp.lovable.app, and the app is watched. You can link an email later.

Step 3: There is no step 3

Pingbuddy figures out the rest from your app:

• It checks your address every 5 minutes, and checks a second time before alerting, so one dropped request doesn't wake you up.
• A real browser opens your app every 30 minutes and alerts you if the page is blank, shows a JavaScript error, or shows a message like "Invalid API key".
• It finds the Supabase project your app uses and tells you if it gets paused, with a link to restore it, and again when it's back.
• It notices when you publish (your app's JavaScript and CSS files change) and checks everything right away. If something broke, the alert says "You published an update 4 minutes ago — and your site broke."
• Once a day, and after each publish, it looks for secret keys in your public code and shows only the first 6 characters of any it finds, with how to revoke that key.
• It spots that your app is built on Lovable and Supabase. When one of those services has an outage, you get a message saying your app may be affected — and that it's not your code.

What an alert looks like

When your app goes down, the alert tells you:

• what's wrong, in plain English ("The server behind it isn't responding properly. It may be overloaded, paused or restarting."), not just a code;
• a screenshot of what visitors see right now, next to the last time it worked;
• the likely cause and how sure the explanation is;
• a ready-to-paste prompt you can give Lovable to fix it.

On the Free plan, screenshots and AI explanations are included for 10 outages a month; the alert itself always goes out. When the app is back, you get a second message saying how long it was down.

Extras that are worth turning on

"Page must contain"

In the site's settings, you can add a short piece of text that must be on the page, like your app's name. If it disappears, the check fails. Note that this checks the HTML your server sends; text drawn later by JavaScript (most of a Lovable app) isn't in it, so pick something from the page title or the HTML itself. The real-browser check covers the rest.

A public status page

Pingbuddy can publish a simple status page for your sites at an address like pingbuddy.app/status/your-name, showing whether each one is up and its outages over the last 90 days. It's free, with a small "Monitored by Pingbuddy" badge. More on that in how to add a status page to your SaaS.

An uptime badge

Each site gets a small badge — "99.9% uptime · Pingbuddy" — that you can put in your README or footer.

Monitoring without any tool (the bare minimum)

If you don't want any monitoring service, at least do this:

1. Open your app logged out, in a private window, after every publish. Click through the main flow, not just the home page.
2. Check the console (right-click → Inspect → Console) for red errors, even if the page looks fine.
3. Log in to the Supabase dashboard once a week so you'd notice a paused project.
4. Keep an eye on Lovable status when something looks odd.

It's better than nothing, but it only works when you remember to do it — and outages don't wait for that.

Try it now

Not ready to set anything up? Run a free checkup of your Lovable app. In about 10 seconds it shows whether the app answers and how fast, when your SSL certificate and domain expire, whether any secret keys are in your public code, and whether its Supabase project is paused — each with a plain-English fix.