Your legacy app isn't dying. A legacy app rescue company gives it rescue.
ERP upgrades, PHP modernization, end-of-life dependency removal, security hardening, and performance rescue. Your app runs in production today. It needs to keep running while we fix it: without a big-bang rewrite or a maintenance window.
Live diagnostic output: your stack may look familiar
Rescue starts with a written plan
We read the codebase before we write a proposal. The rescue plan comes from what we find, not from a template.
Your app's vital signs. Before and after rescue.
"It takes 3 engineers a full week to deploy a 3-line change. And even then, we hold our breath."
Composite from Redefine rescue intake calls
What Redefine rescues: common patterns
- PHP 5.x running on Windows Server 2008 R2
- Dynamics NAV 2009 / NAV 2013 with no upgrade path
- jQuery 1.x / AngularJS / Knockout.js frontends
- MySQL 5.5 / SQL Server 2005 without active support
How the typical legacy app rescue agency works. How Redefine works.
Six comparisons. Every one based on real patterns from rescue engagements we inherited from other agencies.
Four phases. Every rescue. In this exact order.
"The rescue plan arrived before any code changes. We approved every phase before they started. That alone was different from every agency we'd worked with."
- Full codebase and dependency audit with severity ratings
- Security scan and CVE inventory with patch roadmap
- Rescue sequence with rollback strategy per phase
- Cost and timeline estimate per rescue phase
- Target stack selection with documented rationale
- Data migration and transformation plan
- Zero-downtime execution sequence approved by your team
- Continuous integration/continuous deployment pipeline design for post-rescue operations
- Dependency upgrades validated against production traffic
- Security patches applied and CVE log updated per sprint
- Test suite written alongside each module rescue
- Rollback verified and tested before each production cutover
- Architecture decision log and upgrade history
- Maintenance runbooks for each rescued component
- Developer onboarding guide for the new stack
- 100% code ownership in your repository from day 1
50% less manual work. Production still running during the rescue.
Transpek
Chemical Manufacturing
A chemical manufacturer whose legacy ERP environment was non-integrated and dependent on manual data entry, causing delivery delays and limited visibility into inventory and production.
The legacy ERP was non-integrated and dependent on manual data entry across every department. This caused delivery delays, high labor requirements, and limited visibility into inventory and production. The organization could not plan or scale efficiently with the existing system.
Non-integrated ERP. Manual data entry at every stage. No inventory visibility. No production planning capability. Delivery delays affecting customers.
reduction in manual workload after ERP upgrade to Dynamics NAV with SQL Server integration, daily production tracking, and automated inventory management
Increased production capacity and delivery reliability
Compliance and traceability requirements met post-rescue
Five commitments. Every rescue. In writing.
These are not promises. They are documented deliverables that appear in the rescue plan before any work begins. If we cannot meet them, we say so before charging anything.
Get A Free Rescue AssessmentWhat teams ask before committing to legacy app rescue consulting.
Risk, timeline, and what happens if something breaks: these are the questions that matter before starting.
Diagnostic assessment first. Cost depends on what we find.
The free rescue assessment identifies severity levels. The rescue plan provides phase-by-phase cost estimates. You approve before any rescue work begins.
Before you hire legacy app rescue help, select what describes your legacy app right now.
Not every old app needs rescue. Some need maintenance. Some need a rewrite. We distinguish these in the assessment before proposing anything.
Not sure if your app needs rescue or routine maintenance? Describe what you're seeing and we'll give you a direct opinion.
Running PHP 5.x, PHP 7.x, or an end-of-life framework (Laravel 5.x, CodeIgniter 2)
Security patches are no longer available. Active CVEs are accumulating daily.
On Dynamics NAV 2009 / 2013 or a version without Business Central migration path
Upgrade complexity increases with every version skipped. The longer you wait, the more expensive it becomes.
Deploys take more than a day or require a maintenance window
Manual, risky deployments are the clearest signal that the app needs rescue infrastructure.
The original developer is gone and nobody fully understands the codebase
A rescue that produces documentation is often as valuable as the technical fixes themselves.
Probably not rescue: may be routine maintenance if:
App is on a supported version with active patches and deploys cleanly in under 30 minutes
Ongoing maintenance rather than rescue is the right approach.
The primary issue is new feature development, not stability or security
Standard development engagement is faster and more cost-effective than framing this as rescue.
Tell us what's breaking. Get a written rescue plan.
No commitment. No pitch. Work with a legacy app rescue company and get a codebase assessment and written rescue proposal in 3 business days.
Submit your brief
Tell us what language, framework, and version you're running. Describe what's breaking or about to break.
Rescue assessment within 48 hours
We request read access to the repository and run the initial diagnostic scan. No code changes.
Written rescue plan in 3 days
Severity inventory, rescue sequence, rollback strategy, and phase-by-phase cost estimate. You approve before Sprint 1.
Critical fixes in Sprint 1
Highest-severity items addressed first. You see live fixes within the first two weeks of starting.