SUBXCAT finds early-stage products — vibe-coded apps, MVPs, internal prototypes — and finishes the job: code, product, deployment and growth. No rewrite from scratch, no pause in development.
Built with whatever you had
The idea is validated and version one exists. What it needs now is engineering, not another prompt.
You built it in Lovable, Bolt, Replit or Cursor, the first users showed up — and you're afraid it falls over when more of them do.
The MVP got traction, an investor wants a technical review, and every new feature takes weeks instead of days.
An internal tool or pilot built by one person. That person left, the product stayed — and people depend on it.
Generated code looks great in a demo and much worse under load, in someone else's hands, and in its first security review. If two of these sound familiar, it's time.
Not a verdict — a work list. Almost all of it gets fixed without a rewrite.
Individual pieces of work a plan is built from. Scroll through — each card is something that changes in your product.
We go through all of the code and rank the risks — from “the database leaks” to “it crawls at a hundred users”.
Learn moreKeys move from the browser to the server, tables get access rules, input gets validated.
Learn morePayments, auth and third-party APIs that survive a retried request and a dropped webhook.
Learn moreSpend caps, caching and limits: the model bill grows slower than revenue.
Learn moreOne-button releases, backups, logs, and an alert before a user writes in.
Learn moreWe find the screen where people leave and rework the flow, not the button color.
Learn moreOne component set for designs and code — new screens stop looking different.
Learn moreInterviews, retention, pricing: we test who needs the product before paying for traffic.
Learn moreEvents that answer questions, and a first channel that confirms demand.
Learn moreWe take the project in whatever it's built with, and finish it on what will survive growth.
Every step ends with something you can touch: a report, a plan, a working deployment.
Send a link or repo access. Within 48 hours you get a short report: what hurts and what it costs to fix. Free.
Fixed price. Risks by priority, a fix-or-rewrite decision, a roadmap to launch.
We close risks in order: security and data first, then stability and speed.
Production deploy, monitoring, first real users — and we're there when something goes wrong.
Promotion and support. A product you're not afraid to scale.
No code freeze. Two tracks run in parallel and meet in code review.
Rewriting from scratch is the most expensive answer, and usually the wrong one. We decide from the code, not from habit.
The idea and the data model are right; the details hurt. We keep everything that works and rework what's in the way.
We rewrite the heart — data, permissions, payments — and keep the interface people are used to.
It happens. Then we'll say so plainly and show you the numbers.
If you don't need us, we'll tell you. Sometimes one evening and the right checklist is enough.
After the audit, one of two paths. Either way, the code and access stay yours.
We finish the product to the audit plan and hand everything over. From there you build on your own or with any team — no lock-in.
We hand the project over and stay close: the product stays updated, up and current while you focus on customers.
For a product that already works: we keep it locked down.
The product lives and grows: fixes, improvements and releases without a team of your own.
Everything together: the product grows and stays protected. Cheaper than separately.
Prices are in US dollars. Local currency is a guide at the current rate.
A cat finds what's hidden and always lands on its feet. That's all you need from a product after us.
Usually not. We replace only what's unsafe or won't survive growth, and keep everything that works. A rewrite is decided after the audit and explained with numbers.
Yes. That's what we're here for. A mess is just code without structure, and structure arrives step by step without breaking what people already use.
TypeScript, React, Next.js, Node.js, Python, Go; Postgres, Supabase, Firebase; React Native and Flutter on mobile. If you have something else, we'll tell you at the review whether we take it.
The review is free. The audit has a fixed price we name upfront. After that, work is scoped from the audit plan — no open-ended hourly meter.
An audit takes up to a week. Hardening starts at two weeks, depending on what we find. The timeline is in the audit report.
You do, always. We work in your repository and your accounts, and leave documentation behind so the product doesn't depend on us.
Yes, before we see the code. Just tick the box in the form.
Five minutes with our assistant and you get a rough estimate on the spot. Then real people look at the code.
The chat assistant needs JavaScript. Without it, here's a short form.