RUBY ON RAILS UPGRADES

Upgrade an old Rails app without a rewrite.

For teams running a business-critical app on an outdated Rails or Ruby version. We audit the app, add tests around the paths that matter, and upgrade it one version at a time while it keeps serving customers.

Upgrade plan based on a codebase audit
One Rails version at a time, not a big-bang jump
Tests around critical paths before changes ship

10+ years in production · 20+ long-term partnerships

20,000+

Agents on a Rails platform we work on

10+ yrs

Shipping Rails in production

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SOUND FAMILIAR?

Your Rails app works, but it is stuck on a version nobody wants to touch.

The app runs on a Rails or Ruby version that no longer gets security patches.
Gems are pinned to old versions because upgrading one breaks three others.
Hosting or tooling is forcing a Ruby upgrade you have been putting off.
There are few or no tests, so every change feels risky.
Someone has proposed a full rewrite and you are not sure it is justified.
New features take longer because the team works around old framework limits.

WHY CHOOSE STACKWORX

Rails is what we have shipped for 10+ years

Most old Rails apps do not need a rewrite. They need a careful upgrade by a team that reads the code before changing it.

Upgrade, not rewrite

A rewrite throws away years of business logic. A stepwise upgrade keeps what works and modernizes the framework underneath it.

Understand before changing

We map the data model, integrations, and risky areas of the app before the first version bump.

Long-term ownership

We stay on as the team that maintains the app after the upgrade, the way we do with long-term partners like Zentap.

WHAT YOU GET

A stepwise Rails upgrade, start to finish

01Core

Upgrade audit & plan

A written assessment of the current Rails and Ruby versions, gem dependencies, deprecations, and the order to upgrade in.

Version audit
Gem review
Upgrade path

Test coverage first

Tests added around checkout, billing, auth, and other critical paths so regressions show up before release.

Stepwise Rails upgrades

Move one minor or major version at a time, fixing deprecations as they appear, instead of one risky jump.

Ruby & gem updates

Ruby upgraded alongside Rails, and outdated or abandoned gems replaced or updated.

Safe deploys

Small, reviewable releases with error tracking and monitoring so problems surface before users report them.

Ongoing maintenance

After the upgrade, the same team keeps the app current so it does not fall behind again.

32M+
Transactions processed
20,000+
Agents on our platforms
20+
Long-term partnerships
10+ yrs
In production

Proof · Zentap

A Rails platform serving 20,000+ real estate agents.

Zentap is a real estate marketing platform built on Rails, PostgreSQL, and API integrations. We work on it long-term, keeping listing data aligned with current market data and the platform reliable at scale.

20,000+agents on the platform

Book a Discovery Call

HOW IT WORKS

From an outdated Rails version to a current, maintained app.

01
Discovery call
A 45-minute call on the app, its current versions, and what is blocking you today.
02
Audit & plan
We review the codebase and dependencies and agree on the upgrade order and what to test first.
03
Upgrade in steps
Each version step ships as a small, tested increment while the app stays live.
04
Keep it current
We maintain and extend the app long-term so the next upgrade is routine.

WHAT CLIENTS SAY

Partners, not vendors

Great experience! The communication was clear and professional.

justonbruen

Fiverr client, United States

Verified on Upwork

RELATED GUIDES

FAQS

Before You Get Started

What does Stackworx do?

We build and take ownership of the systems your business runs on: custom Shopify apps, Ruby on Rails platforms, third-party integrations, and practical AI workflows. Most clients come to us when off-the-shelf apps and quick fixes stop scaling.

Do you only build new products, or can you take over an existing system?

Both. A large part of our work is taking over existing Rails and Shopify codebases, stabilizing them, and then extending them. We start with a technical audit so you know exactly what you have before anything changes.

How do you add AI to a business that already has software?

We add AI inside the systems you already run rather than bolting on a separate tool. Typical work includes content generation, document and data extraction, product recommendations, and support automation, shipped as a focused AI Integration Sprint with measurable outcomes.

How do engagements usually start?

Most clients start with a Technical Audit or an AI Integration Sprint. From there we move to an MVP build or a dedicated product team on a monthly retainer, depending on how much ongoing work you have.

Which industries do you work with?

Mostly ecommerce brands on Shopify and SaaS companies in PropTech, InsurTech, and FinTech. Our platforms have processed 32M+ transactions and serve 20,000+ real estate agents.

Where is your team, and how do you work with US clients?

Our senior engineering team is based in Lahore, Pakistan, and we contract with US clients through Stackworx LLC, our Wyoming company. We work across time zones with regular overlap hours, async updates, and long-term ownership of the systems we build.

Stuck on an old Rails version? Let's map the way forward.

Book a 45-minute Systems Discovery Call. You leave with a clear view of the upgrade path and what to do first, whether you hire us or not.

Book a Discovery Call

Upgrade an old Rails app without a rewrite.

Get a Rails upgrade plan

Your Rails app works, but it is stuck on a version nobody wants to touch.