For founders with a prototype

Turn your working prototype into a product that holds up

To turn an AI-built or no-code prototype into a production app, keep what it already proves and rebuild what real users will stress: sign-in, data, payments, deployment and monitoring. We fix the riskiest gaps first, and you own the code and the accounts.

01 Sound familiar

Sound familiar?

The prototype won over its first users, but now every change breaks something somewhere else, and nobody can say why.
It was put together with an AI coding tool or a no-code platform, and you are not sure it is safe to hold real customer data.
An investor or a first large customer asked how it is hosted, backed up and secured, and you did not have an answer ready.

Readiness check

Check what your prototype already has

Tick each statement that is true today. The card sorts the rest into what to fix before more people rely on the product and what can follow soon after. There is no score, only an order of work.

Your order of work

Fix first

Fix these before more people rely on the product. Each one protects data, money or your ability to change things, and none of them needs a rewrite to put right.

Someone other than the original builder can deploy a change and roll it back.
Passwords, keys and tokens live outside the code, not in the repository or a chat history.
Each user can only see and change their own data, and someone has tested that.
The database is backed up automatically, and a restore has actually been tried.
The code, the domain, the hosting and the app store accounts are in your company's name.
You would hear about an error or an outage before a customer tells you.

Fix soon

Plan these into the next stretch of work. They make releases calmer and the product easier to hand to a new engineer, and they do not need to hold back a launch.

Changes go through a staging copy before they reach real users.
The main user journeys have automated tests that run on every change.
A short written note explains how the parts fit together and how to run them.
Pages stay fast with realistic amounts of data, not only a few test records.
You know roughly how hosting and paid services will cost more as usage grows.
You could explain to a customer how their personal data is stored and who can see it.

Fine

Keep these as they are. Whatever comes next is built to work with what is already in place, not to replace it for the sake of it.

Someone other than the original builder can deploy a change and roll it back.
Passwords, keys and tokens live outside the code, not in the repository or a chat history.
Each user can only see and change their own data, and someone has tested that.
The database is backed up automatically, and a restore has actually been tried.
The code, the domain, the hosting and the app store accounts are in your company's name.
You would hear about an error or an outage before a customer tells you.
Changes go through a staging copy before they reach real users.
The main user journeys have automated tests that run on every change.
A short written note explains how the parts fit together and how to run them.
Pages stay fast with realistic amounts of data, not only a few test records.
You know roughly how hosting and paid services will cost more as usage grows.
You could explain to a customer how their personal data is stored and who can see it.

Tick a statement that is true, and it moves here.

Talk this through with us →

02 A typical situation

What this usually looks like

A founder usually arrives with a prototype built quickly with an AI coding tool, a group of paying users and a feeling that each new feature is riskier than the last. The code sits in a personal account, and nobody has tried restoring the data.

We would move the accounts into the company's name and put deployment, backups and error alerts in place, then decide screen by screen what to keep and what to rebuild. The users keep working throughout, and the founder sees the order of work before it starts.

03 Start

Bring the prototype, and we will tell you what holds up

Book a first conversation and share a link to the prototype. You will leave knowing what to fix first and what can stay as it is.

What happens next

You pick a time, or send us a message.
A person at Nexstella reads what you shared before we talk.
You leave with a clear next step, even when that step is to wait.

Or write to [email protected]. Send a brief instead

Meet

What happens next

You pick a time, or send us a message.
A person at Nexstella reads what you shared before we talk.
You leave with a clear next step, even when that step is to wait.

Contact

Send us a message

Pick the topic that fits and tell us what you are working on. A person replies within one business day.

First name

Last name

Work email

A person replies from a real address.

Phone (optional)

Choose the country code, then type the number without it.

Company (optional)

Your role (optional)

Topic

The topic leads the subject line, so the right person picks it up first.

What are you working on?

A few sentences is plenty. You do not need to know which technology you need.

With JavaScript off this check cannot run, so the form cannot send. Email hello@nexstella.com instead.

We use what you send to reply and, if it leads somewhere, to scope the work. Read the privacy notice, or write to [email protected].

Want the full picture? Read MVP to production.

Also written for you: Nontechnical founders , Scaling SaaS platforms .

Last updated October 20, 2026