We build, audit &
fix software
for Scale & Security.
Starting fresh, or taking an AI-built website or app to production — we audit what's fragile, fix what would break under load or attack, and hand it back ready for real users.
Audited by our developers — AI-assisted, never AI-only
Startup-friendly pricingPlain-English reportsNDA available
Brands we've worked with
Stacks and platforms we support
Imagine this on your vibe coded app
- Your app's been down since 2am
- A loose API key ran up a $10K bill
- Customers can see each other's data.
None of this is rare — it's the default for unaudited vibe coded websites and apps.
Speed got you here. It won't keep you here.
Book an audit callHow our AI-built website audit works.
- Your app — a repo or a URL — comes to Fixier.
- We set up a private staging copy, so nothing touches your live app.
- Three AI audits run on it in parallel: security, agentic breaking and testing, backend and hosting.
- An experienced developer checks every finding by hand.
- The report, in plain English, comes back to you. That is the audit.
- If needed, we fix what it found.
- Then we re-audit to verify every fix.
- And hand it back to you, production-ready. That is the fix.
What we found, and what clients say.
63 findings in one AI-built app.
Full case studyNodal, a 3D commerce platform built with AI tools, already serving a real storefront.
- 7 critical
- all 13 layers
- first fixes live in 3 days
- 72 tests added
- critical
Account deletion broke at 101 products
A store with more than a hundred products couldn't be deleted, couldn't import a catalog, couldn't sync a storefront, and its main products screen returned an error. No traffic required — it had been true since the first day.
Read the full case study - critical
Analytics died silently under load
Shopper tracking stopped recording at a few hundred people in a store and logged nothing when it stopped. The only symptom would have been a number that quietly stopped climbing — on the merchant's busiest day.
Read the full case study - critical
A store's name could run code
The name a merchant types into their own settings was placed into a page as-is. A name written as code ran as code — on the platform's own domain, not the merchant's.
Read the full case study - critical
Finished work thrown away and refunded
A 3D world that took longer than the timer allowed was discarded and the credits refunded — even when the supplier had finished it, and billed for it. Every one of those was a false alarm that cost money twice.
Read the full case study - high
Rate limiters that never limited anything
Every limit on the platform reported success without limiting. It deployed cleanly and the code read correctly. Brute-force protection that silently does nothing is worse than none, because it stops anyone looking.
Read the full case study - high
The login screen downloaded the 3D engine
Every page shipped the whole rendering stack, including the screens with no 3D on them. On the mid-range Android the product is built for, that is the difference between usable and not.
Read the full case study
"We're in Frankfurt and their team is in India, and the time difference has never been an issue. When something broke, someone was usually already on it. Very responsive, and a good mix of people."
Mayank GuptaCo-founder, Market Vichar · Frankfurt, Germany
"They reply fast and explain things so I can actually follow them. Work comes in on time and our users have been happy."
Raghav ArnejaFounder, Nodal · New Delhi, India
"Good service and always on time. They keep us posted and are easy to work with."
S P GargR.C. Gupta & Co. · Mumbai, India
"We run across several countries, so we need a team that keeps up. They do: quick to respond, clear about what's happening, and the work lands when they say it will."
Surender MehtaManaging Director, Saimex Group
Three ways to work with us: audit, fix or build.
The Audit
A full engineering sweep of your AI-built website or app: architecture, security, database, APIs, and what breaks under load — stress-tested and penetration-tested at the traffic you expect.
- Our experienced developers review every layer — AI-assisted, human-judged
- Every finding ranked — plain English for you, technical detail for whoever fixes it
- Walkthrough call — no jargon, no homework required
Audit + Fix
Everything in the audit — then we fix what it found, in your repo.
- Our specialists implement the fixes from your report, in your repo
- Hosting migration when the platform is the ceiling, not the code
- Re-audit at the end to verify every fix landed
Build from scratch
Production-grade systems, engineered from the first commit — for organisations that cannot afford downtime or a breach.
- Architected for scale, secure by default
- Delivered into your own infrastructure, under mutual NDA
- Full ownership and no vendor lock-in
Startup and beginner-friendly pricing, scoped to your project. A clear, fixed quote before we start — no hourly meters, no surprises.
The people you're handing your code to.
Aakshar Garg
Co-founder, Fixier — technical · LinkedIn
Aakshar leads every audit. He and our developers read your code by hand — route by route, table by table, key by key — with AI used to cover ground, never to decide what counts as a finding. Every line in your report has a person behind it.
Pranav Mehta
Co-founder, Fixier — business & operations · LinkedIn
Pranav runs the commercial side: scoping, pricing, and the call you book. He has built and operated companies across manufacturing, retail and sustainability — which is why you get a fixed quote before any work starts, not an hourly meter.
Ready to make it production-ready?
Tell us about your vibe coded website or AI-built app, or what you want built. You'll get a startup-friendly quote on the call, before you commit.
A small cover charge to start talking — non-refundable, adjusted against your audit fee.
Details received
Now pick your call time.
We'll email your NDA shortly.
A booking fee holds your slot. It's non-refundable, and it comes off your audit fee in full if you go ahead.
Pay the booking feeCheckout is open in a new window. Your calendar opens right here the moment it's paid.
Questions founders ask about AI-built apps
How much is a website audit?
It depends on the size of your app, so you get a clear, fixed quote on the first call, before you commit to anything. Startup-friendly pricing, no hourly meters. The call has a booking fee, credited in full to your audit fee if you go ahead.
Who reviews my app — a person or AI?
Our experienced developers. Three AI audits run first for coverage — security, agentic breaking and testing, backend and hosting — then a developer checks and re-audits every finding by hand before it reaches your report. AI-assisted, never AI-only.
Is my code safe with you?
All repository content is treated as confidential, and we'll sign a mutual NDA before you share anything if you want one. Testing runs on a staging copy, not your live app, and GitHub access through our app can be removed whenever you like.
How long is a website audit?
Days, not weeks, for most apps. You get the timeline with your quote on the first call. In the case study above, the first fixes were live three days after the audit.
Do I have to let you fix it?
No. The report is yours: fix it yourself, hand it to a developer you trust, or have our specialists fix it and re-audit to prove every fix landed. Either way, the codebase stays yours.
I vibe coded it in Bolt, Lovable, v0 or Cursor. Can you still help?
Yes. Whatever you built it with — Bolt, Lovable, v0, Cursor, Replit, Claude Code — we pick up from there, Supabase backends included.
Read the 13-layer production check, what's involved in fixing a vibe coded app, or the guide for Bolt.new, Lovable, v0 or Supabase.