Legacy app modernization

Build the new system next to the old one, and switch over one piece at a time. The Gnar Company starts with the part that will make the biggest difference. The old system keeps serving your users until its replacement works. For the AARP Foundation, the old tools kept running while we rebuilt 14 of them on React and Ruby on Rails.

Rebuild only if the old system can’t be saved or its vendor is forcing you off it. If it still works and the screens are the problem, The Gnar Company builds new screens on top of it. Your data stays where it is. We make the call with you in Discovery, our fixed-price review. It looks at how the system is built, its data, its vendor and where your business is going.

It starts with Discovery, our fixed-price review: from two weeks and $15,000. You leave with a build plan and a guaranteed price. The plan is yours even if you don’t build with us. A modernization build at The Gnar Company usually runs $150K to $300K+. The price is fixed before work starts, and anything over it is on us.

Yes, if you can give us access to your code. The Gnar Company does a free code audit: we read your code and tell you what shape it’s in. We sign an NDA (an agreement to keep your code confidential) before we look. The answer can be that your code is fine. If you go ahead, Discovery is the paid next step. It ends with a build plan and a fixed price.

Your team spends its day working around the system. Signs The Gnar Company sees often: spreadsheets kept next to it, new hires who take months to learn it, data nobody can pull without a developer, a vendor dropping support, and changes that feel risky every time. Discovery tells you which fix you need: new screens or a new system.

The Gnar Company can. We read the old code, map its data and how your team uses it, and work out the rules nobody wrote down. The Massachusetts Disabled Persons Protection Commission (DPPC) ran its Abuser Registry on an old system that couldn’t keep up. We rebuilt it in Ruby on Rails on AWS. It was delivered on time and within budget in 2023.

Yes. The Gnar Company built this service for companies that have no engineers, or whose engineers are too busy to take it on. A senior team, all based in the U.S., runs it from Discovery to launch. And if your own engineers do have the time and know what to build, we’ll tell you to do it yourselves.

Usually, yes. The Gnar Company connects the new system to the software you’re keeping, to other companies’ tools and to the online services you use. While old and new run side by side, we keep the data in sync between them. Discovery first checks how easy each system’s data is to reach.

It covers both paths, new screens or a new system, plus Discovery and our monthly support. On every build, The Gnar Company promises three things. The price is fixed, and anything over it is on us. The software works the way we agreed it would, or we fix it. And the build carries a twelve-month bug-free warranty.

Yes. The Gnar Company can rebuild an app like that as a modern web app. We map its screens, its data and its rules, rebuild them, then move the data over piece by piece. The old app keeps running until each new piece is ready. If the old platform needs its own expert, we work with one.

A small senior team from The Gnar Company: engineers based in the U.S. and a product manager. Design, web and mobile work are all done by our own people. No teams outside the U.S. No junior developers handed the work after a senior sales pitch. The team maps your old system first, then builds the new screens or the new system.

The code is yours. The Gnar Company hands it over in a repository you own, with written notes so another team can pick it up. For twelve months, we fix any part that doesn’t work the way we agreed, at no charge. Ongoing support and new work are separate, through an optional monthly plan. You are never locked in.