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Your critical app, rebuilt and proven equal.

Same system. New technology. Built to grow.

We rebuild the business application nobody can maintain anymore (legacy PHP, old .NET / WebForms, VB6, FoxPro) into a modern TypeScript stack. Fixed price. In weeks. Every function proven equal to the old system, flow by flow.

  • 3 weeks

    LIMS rebuilt from PHP and in production, paid in full

  • Several

    rebuilds delivered with the method

  • 4

    guarantees: weeks, fixed price, parity, delay credit

  • 23 people

    run their company on Fractik every day

The problem

The system runs the business. Nobody can change it.

  • It was built years ago, for how the company worked then.
  • One or two people keep it alive.
  • It cannot take what the business asks for now: integrations, AI.
  • Security has already put a date on it.

The options a company has today

  • Keep patching

    Risk grows every year

    Modern stack
    No
    Fixed price
    No
    Proven parity
    No
    Keeps your logic
    Yes
  • Extended support

    Buys time, fixes nothing

    Modern stack
    No
    Fixed price
    No
    Proven parity
    No
    Keeps your logic
    Yes
  • Big rewrite

    Months to years; undocumented functions get lost

    Modern stack
    Yes
    Fixed price
    No
    Proven parity
    No
    Keeps your logic
    No
  • Replace with SaaS

    Loses the custom logic that made it valuable

    Modern stack
    Partly
    Fixed price
    No
    Proven parity
    No
    Keeps your logic
    Partly
  • ReStacking

    Same system, new technology, proven flow by flow

    Modern stack
    Yes
    Fixed price
    Yes
    Proven parity
    Yes
    Keeps your logic
    Yes
The real competitor is “do nothing”.

What you get

A finished, running system. Not a tool. Not hours.

You keep every function your team depends on. It runs on a modern TypeScript stack, with the source code, a parity report that proves it behaves like the old one, and a runbook.

Before

  • Legacy PHP, old .NET / WebForms, VB6 or FoxPro
  • One or two people keep it alive
  • Cannot take integrations or AI
  • An end-of-life date on the calendar

After

  • Next.js on Vercel, Postgres
  • Same flows, proven equal
  • Ready for integrations and AI
  • Supported and improved every month

How it works · 4–8 weeks · fixed price · 100 % parity

Five steps. One price. Proof at every step.

  1. Step 0

    Blueprint

    One paid week. Scope and price fixed, exit clause.

  2. Step 1

    Rebuild

    AI agents build; people direct and review.

  3. Step 2

    Parity proof

    Real flows recorded on the old system, replayed on the new.

  4. Step 3

    Cutover

    Old system retired.

  5. Step 4

    Care + Improvements

    Monthly support, evolution and new features.

Four guarantees: typical 4–8 weeks · fixed price agreed before starting · 100 % parity flow by flow · delay credit if we are late.

See how parity works →

Acceptance is a dashboard, not an opinion.

Every real user flow is recorded on the old system and replayed against the new one. Each one matches or opens a defect.

Parity dashboard · one row per flow · each backed by a CI run

Parity dashboard: each user flow recorded on the old system and replayed on the new one.
FlowRecorded on oldReplayed on newStatus
Create sampleDoneDoneMatch
Assign tests to sampleDoneDoneMatch
Enter raw resultsDoneDoneMatch
Approve result (QA)DoneDoneMatch
Issue certificate PDFDoneDoneDefect → fixed → match
Customer portal loginDoneDoneMatch
Monthly invoice runDoneDoneMatch
Export to accountingDoneDoneMatch
Audit trail per sampleDoneDoneMatch
9 of 9 flows in parity · 1 defect found and fixed ·Approved

Defects are visible, not hidden.

Representative dashboard. Flow names are illustrative lab and ERP flows.

Why us

  • Result, not hours

    The finished system in production, old one retired. Fixed price per application, no time-and-materials escape.

  • Parity you can audit

    Acceptance is a parity dashboard: one row per flow, each backed by a CI run.

  • We run our company on it

    Fractik is how all 23 people at Galaxy ship software; every project makes the next one faster.

  • Clean-room method

    One extractor sees the old system, the builder never does. Only sanitized specs and the recorded oracle cross the wall.

Pricing by tier · Blueprint is credited to the rebuild

The price is fixed before we start.

  • S · Tool

    Blueprint · 1 week
    USD 6K
    Rebuild · fixed price
    USD 29K
    Care + Improvements
    from USD 1,750 / mo
  • M · App

    Blueprint · 1 week
    USD 12.5K
    Rebuild · fixed price
    USD 79K
    Care + Improvements
    from USD 2,900 / mo
  • L · Platform

    Blueprint · 1 week
    USD 22K
    Rebuild · fixed price
    USD 165K
    Care + Improvements
    from USD 4,900 / mo

Final price is fixed in the Blueprint, before the rebuild starts. Typical 4–8 weeks. 100 % parity flow by flow. Delay credit if we are late.

See full pricing →

Why now · public clocks, not opinions

The dates are already on the calendar.

  • 31 Dec 2026

    PHP 8.2

    security support ends

  • Oct 2027

    SQL Server 2017

    end of support

  • Jun 2020

    Magento 1

    no support; PCI DSS 4.0 cannot be met

  • 5 Jan 2025

    Drupal 7

    no more patches

  • Now

    Cyber-insurers

    scan for end-of-life software before issuing a policy

62 %

of US organizations run at least one legacy system.

Source: Saritasa, “State of Legacy Systems” survey, May 2025, n=504 US organizations.

4 in 5

IT leaders have had at least one modernization project fail.

Source: Wakefield Research for vFunction, 2022, n=250 US IT leaders.

Sources

  1. 62 % of US organizations run at least one legacy system. Saritasa, “State of Legacy Systems” survey, May 2025, n=504 US organizations.
  2. 4 in 5 IT leaders have had at least one modernization project fail. Wakefield Research for vFunction, 2022, n=250 US IT leaders.

Tell us about the system nobody wants to touch.

30 minutes. We tell you whether a Blueprint makes sense.