Velocity Labs is a custom software development company in Phoenix, Arizona. We help you finish the web app you started, get it deployed, and keep it running, with a senior developer leading every project.
Most of our work starts with an app that already exists and matters to a business. Some of it starts with an idea.
Add AI to your existing app without rebuilding it, like chat over your app’s own data using the Claude API with tool calling.
Add AI to your appYour app is outdated or fragile, or your last developer disappeared. We take it over, stabilize it, and modernize the legacy code that is holding your business back.
How a rescue worksYou built it with Lovable, Replit, Base44, Cursor, or Claude Code, and it has outgrown them. We fix what’s holding it back, close the security gaps, and make it production ready for real customers.
Fix a vibe coded appFrom idea to launch: MVPs, SaaS products, and Stripe billing, built to be maintained after the launch party. Not sure what to build first? Start with a one-day story workshop.
MVP developmentAn independent code review of your whole app, graded on eight areas, with a plain-English report and a fix plan, most urgent first.
Compare audit levelsYour business runs on the app and you need a dependable team to look after it: monitoring, security updates, backups, fixes, and improvements, month after month.
Maintenance plans“The best development studio I have ever used, hands down. The code is clean, scales well, is delivered on time and with style.”
Princess Dental Staffing
Dental practices use it to hire staff and book temps online. Along the way we built its Stripe subscriptions, the API behind its mobile app, and AI-based matching, as it grew from one local market to nationwide.
We audited this firm's job and invoicing app, fixed the three urgent issues we found, rebuilt its invoice engine, upgraded Rails, and still look after it.
Since April 2026
Alteryx workflows, rebuilt in Rails.
Reports and data deliveries across US, EU and Australian regions
Product registration data for consumer brands. We're the largest contributor to the job platform behind their clients' scheduled reports and data deliveries.
We added the paywall and all of its Stripe billing in about three weeks: per-seat monthly and annual plans, sales tax, and promo codes.
Online programs for chronic pain and depression, built for a team of psychologists. We've been their development team since 2014.
A swim instruction video site we took over after launch and developed for six years: subscriptions, payments, and video delivery.
If one of these sounds like you, we should talk.
“Delivered quality software on time and within budget. I really like the agile software development structure with weekly meetings, etc. It really helped keep all of us on track.”
A 30-minute call about your app, your business, and what’s going wrong or what you want next. No pitch deck.
For an existing app, a code audit with the most urgent fixes first. For a new one, a story workshop, a scoped plan, and an honest estimate.
A senior developer leads the work, ships in small steps, and stays on afterward for as long as you want us.
We use AI tooling every day, so changes ship faster. Every one of them is still reviewed by an experienced engineer, and we tell you early when something is off.
Both partners are senior developers in Phoenix, Arizona, with more than 20 years of experience each.
Managing Partner
Builds MVPs and SaaS apps, takes over codebases other teams left behind, including ones started with AI tools, and insists on automated tests and code review.
Managing Partner
Steps in as a fractional CTO, audits codebases, and leads development from architecture to production while still writing code every day.
“We have had a great relationship! They always find the most elegant solution, are responsive to questions and concerns, and provide fast turnaround on projects.”
Yes, and it’s a big part of what we do. We start by making sure you control your code, hosting, and accounts, then audit the app so you know what you have, and fix the most urgent problems first.
Yes. We review what the tool generated, fix what’s holding it back, close the security gaps, and make it production ready for real customers. A code audit is a good first step.
Usually, yes. We build AI features on top of the app and data you already have, like a chat that answers questions from your own records, first drafts of routine emails and reports, or a tool that reads incoming invoices and forms so nobody has to retype them.
Ruby on Rails, React, Next.js, TypeScript, Node.js, Python, React Native, PostgreSQL, Supabase, and more. We also integrate services like Stripe, Twilio, SendGrid, Amazon S3, Vimeo, and AI models such as Claude and Mistral. Our team has worked with Rails since 2007 and still does Rails upgrades.
Phoenix, Arizona. We’re a US-based team working in US time zones.
“More than a development firm, they are a trusted resource for us. I look forward to working with them for many years.”
We'll tell you honestly whether we're the right fit.