A nurse sat down with Lovable and Claude and built a working medical records app. Not a mockup, not a weekend toy. A real application that real patients' information would flow through. It looked good, it worked, and people started using it.
Then came the part nobody warns you about. The app lived on Lovable's hosting, with Lovable's database and Lovable's AI keys behind it. Logins were shaky. There was no clear answer to "where does my data actually live, and who can see it?" And the moment she wanted to make a serious change or move onto infrastructure she controlled, she was stuck waiting on a platform she didn't own.
Her name is Marissa. She came to me to fix exactly that. After I got the first app onto her own setup, she hired me again to do the same for a second one. That repeat decision is the part of this story I care about most.
When a prototype quietly becomes a real business
No-code builders like Lovable, Bolt, and Replit are genuinely great at one thing: getting you from an idea to a working app in days instead of months. You should use them. I tell people that.
The trouble starts later, and it starts quietly. One day you look up and your "prototype" has real users, real data, and real consequences if something breaks. For Marissa's first app that data was patient records. For her second it was the learning plans of neurodivergent kids. At that point you are not running an experiment anymore. You are running software that people depend on, and the questions change.
Where does my data live, and do I own it? If two different families use my app, can one of them ever see the other's records? When someone forgets their password, does the reset email actually arrive? If I want to change how the app works next month, can I, or am I locked to one vendor's roadmap? Those stop being nice-to-haves the moment real people show up. They become the whole job.
Two apps, the same problem
Marissa is not a developer. She built both of her apps the modern way, describing what she wanted to Lovable and Claude and shaping the result by hand.
The first app is FullyCharted, a medical records tool. The second is MySynapse, a homeschool planning platform built for neurodivergent learners. Different audiences, same underlying situation: a working app, sensitive data inside it, and a hosting setup she had outgrown.
One thing the reviews leave out: Marissa made this easy. She knew her product cold, she knew exactly what she needed, and she was more technically capable than she let on. A migration like this goes far smoother when the client can answer the hard questions quickly, and she always could. Not every project has that, and it mattered here.
Both needed the same move. Off the no-code platform and onto infrastructure she owns, without losing a single row of data, and without the live app going dark while I did it.
What "going to production" actually meant
When I say I migrated her apps, here is what that meant in plain terms.
I moved each app onto a stack she owns. The website runs on Vercel. The database and the logins run on a fresh Supabase project that belongs to her, not to a platform she rents. If she ever fires me, she still has everything.
Every piece of data came across with zero loss. FullyCharted had 45 database tables. MySynapse had 43 tables and 2,333 rows. None of it was eyeballed. Every table and every row was counted against the original export and reconciled until the numbers matched exactly.
The security is real, and I proved it. The technical name is row-level security. The plain version: one family or patient must never be able to see another's data. I set that up, then tested it from a separate account and from an anonymous visitor, and confirmed they saw zero of another family's records and could not write into them either.
Logins work now. Real authentication, and password reset emails that actually land in the inbox, so her beta users can get back in.
Her AI features kept running, now on her own keys. Both apps called AI through Lovable's gateway. I swapped that for a direct connection to Anthropic on Marissa's own account, so the smart features keep working and she controls what they cost.
Then I handed her the keys. By the end she could run the app on her own computer, make a change, and watch it deploy. The goal was never to make her dependent on me. It was the opposite.
Zero data loss is not a slogan
It is easy to put "zero data loss" on a website. It is harder when the data is patient records and the learning needs of children.
"I think it all came over" is not good enough for data like that. So I treated verification as part of the work, not an afterthought. Row counts reconciled to the export manifest. Security checked across real accounts instead of assumed. A written pass/fail report for every table. None of that is glamorous, and that is the point. With sensitive data, careful and boring is exactly what you want.
★★★★★
"I came to him as a non-developer with a production health app handling real patient data. What he delivered exceeded every expectation. He handled real patient data with the care it deserved, and went far beyond the scope of what was asked. I'm hiring him immediately for my second app migration and consider him my go-to developer. 5 stars without hesitation."
Marissa C., Founder, FullyCharted
Lovable → Vercel + Supabase · 45 tables · 1,345 tests passing · zero data loss
Why she came back for the second app
The line in that review I keep coming back to is the quiet one: "I'm hiring him immediately for my second app migration."
That is the real test of any project. Not whether the client is happy when you finish, but whether they trust you with the next thing. Marissa did. I ran the same playbook on MySynapse, and by the end she had it running locally, auto-deploy connected, and enough confidence to change the app herself.
★★★★★
"Bill delivered another exceptional migration, moving MySynapse, my homeschool planning platform, from Lovable Cloud to self-owned Vercel and Supabase. All 43 tables and 2,333 rows migrated perfectly with zero data loss. By the end I had the app running locally, auto-deploy connected, and full confidence to make changes independently. Bill is my go-to developer. Highly recommend!"
Marissa C., Founder, MySynapse
Lovable → Vercel + Supabase · 43 tables · 2,333 rows · 5 AI edge functions
What you actually get from a migration like this
Strip away the specifics of Marissa's apps, and here is what a move like this leaves you with.
You own the whole stack, so no platform can hold your app hostage or change the rules on you. The data is secure and you have proof of it, not a promise. Logins and password resets work for real users. The AI runs on your own account, so you decide what it does and what it costs. And because the app runs on your own machine with a clean path to deploy, you can keep building instead of waiting on a vendor.
There is a real trade-off here, and I say it plainly to every client. A migration is genuine work, and it is not free. Not every prototype needs one yet. If you are still testing an idea with a handful of friendly users, stay on the no-code platform and keep moving fast. The time to do this is when real people and real data show up, when the cost of a breach or an outage stops being theoretical, and when you need to own and extend the thing you built. That is the moment Marissa was at. Twice.
Does your app live on a Lovable, Bolt, or vibe-coded platform?
Take it to a full production application: a complete backend and front end, running on hosting you own. That is exactly what I do. I did it twice for one founder, with zero data loss both times, and handed her the keys at the end.
Not sure where your app stands? I put together a free Lovable-to-Production Checklist: the 10 things that break first when real users show up, with the fix for each. If a few of them sound familiar, that is usually the signal.
Book a call now and I will tell you honestly whether you are ready for this move and what it would take. No pressure, no jargon.