AI got you to 80%We ship the last 20%

App built with an AI tool but parts are missing or breaking? The more you "fix", the messier it gets. Fastdev's developers finish what AI started: complete the missing features, clean the code, and make it ready to launch.

Fixed pricing
EU-based team
1–2 week delivery
golive.fastdev.com
AI Prototype Analysis
Authentication system✓ Complete
Payment integration⚠ Incomplete
User roles & permissions✗ Missing
Error handling✗ Missing
20 000 SEK
Estimated cost
1 week
Delivery time
The problem

Why AI-built apps stall

Not everything is there

Sign-in works, but roles don't. Payments start, refunds don't. Search exists, filters don't.

Small changes break other parts

You fix one screen and another stops working. Everything feels interconnected and fragile.

The app feels "fragile"

Random errors, slow pages, unclear flows. It works sometimes, but you can't trust it.

You're out of depth

The tool was great for the draft, not for a real product. You need expertise you don't have.

AI is great at starting. Shipping still needs humans.

That's where Fastdev comes in. We bridge the gap between AI prototype and production-ready product.

What we do

We take your AI-generated project and make it:

Complete

Finish the features that are half-done or missing.

Consistent

The same rules everywhere; no surprises between pages.

Reliable

Fewer crashes, fewer support headaches.

Secure enough to sell

Protect accounts and data the right way.

Fast and smooth

No more "why is this page so slow?"

Launch-ready

Clear setup, simple releases, easy handover.

You keep full ownership. No lock-in.

How it works

Simple, transparent process from code review to launch-ready product

Send the code

Share a GitHub link (read-only) or upload a ZIP.

Instant check

Our system scans your project and shows a draft price.

Human confirmation

A senior developer reviews and locks a fixed price.

4

We finish it

We complete features, fix errors, tidy the project, and hand it back ready to launch.

Fixed-price packages

Transparent pricing with no hourly surprises. Final price fixed after review.

All prices excl. VAT

Small polish
20,000 SEK
For simple apps where most things work but need finishing touches and stability.
Get an instant quote
  • Fix UX glitches
  • Complete missing features
  • Fix stability issues
  • Basic error handling
  • Code cleanup & optimization
  • Basic deployment setup (staging + one-click deploy). App Store/Google Play submission available as add-on (+5,000 SEK)
  • Basic documentation
Recommended
Serious upgrade
40,000 SEK
For working applications with existing users that need more features, speed, and reliability.
Get an instant quote
  • Everything in Small Polish
  • Advanced feature completion
  • Performance optimization
  • Security hardening
  • User role management
  • Advanced error handling
  • Deploy new version to production
  • Comprehensive testing
Full production makeover
from 100,000 SEK
For bigger or sensitive projects that need to pass external review and scale up.
Get an instant quote
  • Everything in Serious Upgrade
  • Advanced security
  • Scalability architecture
  • Advanced monitoring & logging
  • Compliance requirements
  • Multi-environment setup
  • Load testing & optimization
  • Documentation & handover
  • Development team training

FAQ

Can't find what you're looking for? Contact our engineering team

Ready to turn your AI prototype into a real product?

Upload your code and get a fixed price today.