Reeve Is your Lovable app safe?
Lovable makes it wonderfully easy to build and ship a real app without writing code. But that same speed can quietly leave a door or two open — and there's usually no way for you to know from the inside.
Reeve checks the most common doors from the outside, for free, and explains what it finds in plain English. No install, no access to your accounts — we only look at what's already public, the same things anyone on the internet could see.
Paste your app's link. About 20 seconds. See your grade with no signup.
What can actually go wrong with a Lovable app
None of these mean you did something wrong. They're the normal side-effects of building fast. Here are the ones worth checking:
A secret key shipped to the browser
A "secret key" is the master password to a service you use — your database, an email tool, an AI API. It's meant to live on a server. Sometimes one slips into the code that runs in your visitor's browser, where anyone can read it, and someone could use it to reach your data or run up bills in your name. The nuance: some keys are meant to be public (Lovable and Supabase call these "publishable" or "anon" keys) — those are fine. Reeve knows the difference, so a safe key never triggers a false alarm.
Your database left open (Supabase RLS off)
Lovable apps usually store data in Supabase. Supabase has a safety switch called Row Level Security (RLS) that decides who's allowed to read or change each row. If it's off, your tables can be readable — or editable — by anyone who finds the address. This is the difference between "my data is mine" and "my customer list is public," and it's the single most common issue in vibe-coded apps.
An exposed .env or config file
The .env file is where a project keeps its passwords and keys. Now and then it gets published alongside the app by mistake. If it's reachable, it's a shortcut straight to everything sensitive. Reeve checks whether yours is quietly accessible.
Public file storage
If your app lets people upload files — photos, PDFs — those live in storage "buckets." A bucket left public means anyone can browse or download what's inside, so an upload meant for one person can end up visible to everyone. Reeve checks whether your buckets are listable; it never downloads anyone's files.
Source maps left on
A "source map" is a behind-the-scenes file that reveals your app's original code. Handy while building, but if it ships to production it hands strangers a readable copy of how your app works — which makes every door above easier to find. Not urgent alone, but worth tidying.
Missing safety headers & open endpoints
Small settings that tell browsers how to protect your visitors, plus whether your app's data endpoints answer to anyone or any website. Individually minor; together they widen the gap. Reeve flags the ones that are missing.
What Reeve is — and isn't
Reeve is a free, read-only check from the outside — like a home inspector walking the perimeter and trying the doors. It's fast and it catches the common, high-impact mistakes. It is not a full security audit, and a clean grade isn't a guarantee — it means the obvious doors are shut.
Lovable is a capable tool, and its team keeps adding security guardrails; Supabase also has a built-in advisor that flags RLS problems inside its dashboard. Both are genuinely useful. What Reeve adds: you live in Lovable, not in the Supabase console, and those tools speak developer. Reeve looks across your whole app from the outside — the way a stranger would — and tells you what it finds in words you can act on. And if you'd rather not think about it at all, we can watch it for you.
Want it handled, not just checked?
Reeve Care keeps watching your app, backs up your data, and helps you fix things when they break — so you can keep building instead of worrying.
Learn about Reeve CareQuestions, answered honestly
Is my Lovable app secure by default?
Lovable gives you a solid starting point and keeps improving its defaults, but "secure by default" still depends on how your app is set up — especially your Supabase database rules. The only way to know is to check what's actually exposed, which Reeve's free scan does in about 20 seconds.
Can a Lovable app leak my API keys?
It can happen — usually when a key that belongs on a server ends up in the front-end code. But not every key is a problem: some are designed to be public. Reeve reads your app's loaded code, finds any keys, and tells you which are safe and which need to move.
What is Supabase RLS and why does it matter for my Lovable app?
RLS (Row Level Security) is Supabase's rule for who can see or change each row of your data. If it's off, your tables can be open to anyone. Since most Lovable apps use Supabase, it's the most important thing to get right — and Reeve checks it without ever reading your actual data.
Will scanning my Lovable app break anything or change my data?
No. Reeve only looks at what's already public from the outside. It never logs in, never changes anything, and never downloads your files — read-only, like checking whether a door is locked without stepping inside.
Built somewhere else? We've got the same honest rundown for:
Automated external check, not a full audit. Absence of findings is not a guarantee of safety.