App takeover
You built your app with Lovable, Bolt, Cursor or Replit. It works in a demo, but you’re afraid to launch it, or it’s starting to break. I look at what’s wrong and make it reliable.
- An audit in 2 days
- Audit: €1,000 excl. VAT. Securing the app and going live: from €3,000 excl. VAT
30-minute call, free and with no commitment.
I work with AI too
I’m not going to blame you for using Lovable or Bolt. I work with AI every day too. My job here is to check what it produced and fix what it let through.
When to call me
You’re afraid to launch it
You don’t know whether your customers’ data is protected.
It breaks as soon as you change it
Every fix creates another problem, and the tool goes round in circles.
Your first users are arriving
It held up for a demo. Now it has to hold up with real customers and real payments.
You want to take back control
The code, the database and the hosting should be yours.
How it works
We talk for 30 minutes. You show me the app and what worries you.
Audit, 2 days. I read the code and test the app. You get the list of problems in order of importance, with my opinion: repair or rebuild.
Securing the app and going live. I fix the security holes and the bugs that block you, add tests on the key user journeys and move the app to hosting that belongs to you. This step adds no new features.
After that, if you want, I take care of maintenance and improvements.
What I look at first
The data
Who can read what. Database access rules often get forgotten, for example RLS on Supabase.
The secret keys
They must never end up in the code sent to the browser.
The payments
Nobody should be able to fake a payment, and the messages sent by the payment service have to be verified.
What depends on the platform
The code, the user accounts and the files: what’s easy to get back, and what isn’t.
The price
- Audit, 2 days
- €1,000 excl. VAT
- Securing the app and going live
- from €3,000 excl. VAT
Securing the app is at least 6 days of work. You keep the audit, even if you carry on with someone else. The exact price is written in the proposal, before we start.
After launch
- Hosting
- from €50 excl. VAT per month
- Maintenance, hosting included
- from €200 excl. VAT per month
- Improvements, hosting and maintenance included
- from €700 excl. VAT per month
I reply within 1 working day. Unused time doesn’t carry over, and outside services, like sending emails or AI, are at your expense. You can stop whenever you want: the code and the accounts stay yours. See the plans in detail
Some examples
Further reading
Your questions
Another question? Email me at killian@propell.studio
What’s a vibe-coded app?
An app built by describing what you want to an AI, with tools like Lovable, Bolt, Cursor or Replit, often without reading the code it produces.
Does it all need rebuilding?
Not necessarily. That’s the question the audit answers: I tell you what can be repaired and what isn’t worth repairing.
What if the audit shows rebuilding is better?
I’ll tell you and give you a price for it. You keep the audit, and what happens next is up to you.
Will I be able to keep using Lovable or Bolt?
It depends on what has to change. I’ll tell you at the end of the audit.
I’m not technical. Is that a problem?
No. I explain the technical choices in plain words and you test each new version yourself. Your job is to tell me whether it does what you expect.