Rewrite PHP apps in Next.js and modern TypeScript

Rewrite PHP apps in Next.js and modern TypeScript

Multi-agent AI platform analyzes your app and re-creates it from scratch.

Outputs a well-architected, maintainable & future-proof TypeScript codebase.

Secure, fast, scalable and reliable to delight your users.

Easy and efficient to work with to delight your developers.

Features

Lightning-Fast Migration

20x faster than traditional methods. What takes months, appTape completes in days.

Multi-Agent Analysis

Specialized AI agents analyze datamodel, API, business logic, and edge cases.

Clean Architecture

Clean Architecture principles. Modern tech stack. Comprehensive test coverage included.

10x Cost Savings

Save 90% compared to agencies or in-house dev teams on migration work.

Any Legacy Stack

Node.js, PHP, Ruby, and more. Extracts behavior from even obscure libraries.

Auto-Generated Tests

Unit, integration, and E2E tests created automatically with continuous feedback.

How it works

1.

Install the CLI

Install Stacktape CLI on any OS. The installation takes just a few seconds.

2.

Run appTape migrate command

appTape runs on your system. You can use your own API Keys or delegate it to us.

  • appTape creates a preliminary estimate of time and costs of the migration.
  • Then, it opens a localhost UI in the browser, where you can perform the migration.
3.

Choose your tech stack

Pick your preferred tech stack from a list of vetted, modern, future-proof libraries.

Framework

HonoExpressFastify

API

tRPCOpenAPIGraphQL

ORM

PrismaDrizzle

Auth

Auth.jsBetterAuth

Add-ons

AI agent (ai-sdk)logging & tracesmetricsproduct analyticsfile storageemailslinting
4.

appTape generates a PRD (Product Requirements Document)

PRD includes a clear specification that drives architecture and implementation.

5.

appTape designs the architecture

appTape's architecture engine maps the PRD to a layout with clear boundaries.

  • Breaks requirements into layers
  • Defines interfaces between layers
  • Follows a pragmatic take on Clean Architecture
6.

appTape implements with specialized agents

appTape's implementation and testing agents collaborate to generate code and unit tests for each layer.

  • Routers - routes and middleware
  • Middlewares - reusable cross-cutting logic
  • Controllers - HTTP concerns and orchestration
  • Use-cases - pure business logic
  • Repositories - high-level database interfaces
  • Database - schema and client (Drizzle or Prisma)
  • View - Next.js app (SSR, SSG, ISR)
7.

appTape verifies end-to-end quality

appTape's QA engine adds integration and E2E tests to validate the whole app beyond unit coverage.

8.

appTape builds deployable artifacts

appTape creates optimized Docker images or Lambda packages. Stacktape's Typescript build is highly tuned.

9.

(optional) appTape deploys your app to AWS

appTape generates Stacktape Infrastructure as Code configuration. Stacktape creates production-grade infrastructure within your own AWS account and deploys the app.

Pricing

Free

For existing small projects

$0

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    Up to 2500 Lines of Code per app
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    Unlimited apps
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    Bring your own API key

50% OFF FIRST APP

Essential

For existing medium to large projects

$0.20 / LoC

$0.10 / LoC for 1st app

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    Everything in Free tier
  • check-icon
    Unlimited app size
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    Deploy anywhere

50% OFF FIRST APP

Pro

For existing medium to large projects

$0.20 / LoC + Fixed fee

$0.10 / LoC for 1st app

  • check-icon
    Everything in Essential tier
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    Zero downtime migration
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    Custom features & integrations

Free

$0

  • check-icon
    Up to 2500 Lines of Code per app
  • check-icon
    Unlimited apps
  • check-icon
    Bring your own API key

Essential

50% OFF FIRST APP

$0.20 / LoC

$0.10 / LoC for 1st app

  • check-icon
    Everything in Free tier
  • check-icon
    Unlimited app size
  • check-icon
    Deploy anywhere

Pro

50% OFF FIRST APP

$0.20 / LoC + Fixed fee

$0.10 / LoC for 1st app

  • check-icon
    Everything in Essential tier
  • check-icon
    Zero downtime migration
  • check-icon
    Custom features & integrations

FAQ

What if my app uses some obscure library or pattern?
appTape extracts the behavior, not the implementation.
It doesn't matter if you use weird libraries. We figure out what your code does and reimplement it cleanly.
If something is genuinely unclear, appTape will ask you during the process.
Can I pause and resume the migration?
Yes. appTape saves progress locally.
You can close it and come back later. Everything picks up where you left off.
What happens if I have undocumented business logic?
The extraction agents analyze the actual code behavior.
They capture what the code does, not what the docs say it does.
You'll get a PRD to review before implementation starts. That's your chance to correct any misunderstandings.
Do you support monorepos or microservices?
Monorepos: yes.
Microservices: you migrate each service separately. They're independent anyway.
If services share code, appTape can extract that into shared packages.
What about environment variables and secrets?
appTape detects them and creates a template config file.
You fill in your actual values. They never leave your machine.
Deployment uses AWS Secrets Manager or Parameter Store.
Can I exclude parts of my app from migration?
Yes. You can tell appTape to skip certain modules or routes.
Useful if part of your app is already modern or you want to migrate incrementally.
What if I need to modify the generated code later?
It's just regular TypeScript. Clean architecture, good structure, readable.
No magic, no generated code you can't touch.
Modify it however you want. It's your codebase now.
How do you handle API rate limits and external dependencies during testing?
Tests use mocks for external services by default.
appTape generates mock implementations based on what it observes in your code.
You can configure real API calls for integration tests if you want.

Ready to start your migration?

You can have your first app migrated in less than 24 hours.