Your app is the product your customers judge you by. We rebuild ageing apps on Apple's and Google's modern platforms, with AI doing the heavy lifting and decades of mobile leadership steering it. Work that once took a year now takes a couple of months, at a fixed price, while your product keeps shipping.
Every "simple" change takes three weeks, because most of that time goes on working out what's safe to touch.
Fixing one thing quietly breaks another, because nobody fully understands the code any more.
Features you promised months ago keep slipping, because every change to the app takes longer than anyone planned for.
Every new feature costs more than the last, and the maintenance bill only moves in one direction.
Apple and Google raise their SDK requirements every year, and apps that fall behind first stop reaching new devices, then stop being listed at all.
These are symptoms. The root cause is a codebase written for a platform that has moved on. Modernising the code removes the root cause.
Moving your product onto today's platforms gives you an app that is understood, tested, and built the way Apple and Google intend. That shows up where it matters: in your costs, your reviews, and how fast your roadmap moves.
Modern languages were designed to eliminate whole categories of the crashes that plague older apps. Combined with proper test coverage, stability stops being a weekly firefight.
When the code is clean and understood, a fix that took three weeks takes an afternoon, and new features ship in days. Your app keeps pace with your business again.
Less time firefighting means your development spend goes into things your customers actually see, rather than into keeping the lights on.
A modern stack attracts modern talent. Recruiting stops being a search for the shrinking pool of developers willing to work in legacy technology.
Apple and Google build their new capabilities for their modern frameworks. A modernised app can adopt them the day they ship.
These are three of the most recent apps we've modernised. Different industries, different technologies, the same outcome: a product the business can rely on and build on.
Full migration from an ageing app to a modern product, architected end to end across the front end and the backend. The transition ran without a single outage across systems, and the finished product passed independent penetration testing.
Migrated a React Native product from legacy Redux onto a modern Expo foundation, with over-the-air releases, offline-first capabilities and localisation built in. Delivered with full test coverage and a modern CI/CD pipeline, giving the team complete confidence in their product.
Migrated the iOS and Android apps from legacy Java and Objective-C onto modern systems, modernised the backend API, and delivered a full redesign along the way. The new foundation made room for a brand-new watch app and AR property tour features.
We're an AI-first studio led by Francis Beasley, a lead mobile developer, architect and AI engineer with over 18 years in the industry. We were there when the legacy was written: our team reads a decade-old codebase like native speakers, and years of building on Apple's and Google's modern platforms mean we know exactly what your product should become.
We've built and rescued apps for some of the biggest names on the App Store, led projects end to end from UI/UX to release, and spent recent years weaving AI tools like Claude Code into our workflow, vastly reducing time to market and cost.
AI multiplies experience, and the more experience you bring, the more you get out of it. The heavy lifting is handled; our judgement goes into the decisions that matter.
Apps our team has built and led for
Francis Beasley · Founder
There's no big-bang rewrite and no feature freeze. The work runs in four stages, and your app keeps shipping through all of them.
AI reads your legacy system and explains what it does, why it was built that way, and where the dependencies live. Knowledge that left with the original developers comes back within days, and you receive it as a written audit report.
Before a single line changes, behavioural tests are created against the existing app. We know precisely what "working" means, and every migrated piece is verified against it.
The move happens one screen and one feature at a time, each step verified, while your product keeps shipping and your customers simply see the app getting better.
AI does the heavy lifting on translation and first-pass review. Our team's decades of mobile leadership go into the decisions that matter: the architecture, the priorities, and the quality bar.
There's no single "right" way to structure an app, and anyone who says otherwise is selling a template. The foundations we rebuild yours on depend on who maintains it, how your product will grow, and how quickly you need to ship. We've delivered on every major approach, so the choice is driven by your business, and the reasoning is written in language your board will understand.
A small in-house team needs a simple, readable structure they can own. A larger or rotating team benefits from stricter separation, so people can work in parallel without stepping on each other.
A focused single-purpose app and a sprawling multi-team product deserve different foundations. We match the structure to the product you actually have, so it stays simple where it can be and robust where it must be.
Planning both platforms, a white-label variant, or new markets? The decisions that make those cheaper get made now, so your roadmap accelerates instead of stalling.
The recommendation arrives as part of your audit report, written for decision-makers first and engineers second, so you understand exactly what you're buying and why.
Some things shouldn't be optional extras or awkward conversations later. Every modernisation we deliver includes the foundations a serious product needs, built in from day one rather than bolted on.
Your app is built localisation-ready, so adding a new language or market is a content exercise for your team, and never another engineering project.
Automated build, test and release pipelines mean every change is verified before it ships, and getting an update to your customers takes minutes, on demand, without drama.
Crash reporting and health monitoring are wired in from day one, so problems are spotted and fixed before they become one-star reviews.
Security built to stand up to independent scrutiny. Our team's background includes banking apps that were penetration tested every three weeks, and that's the standard we build to.
And the scope is wide: we work across all kinds of apps and their backends, so the whole product moves forward together.
The app your customers see is only half the product. Behind it sits the backend: the servers, databases and services it talks to. Ageing backends carry the same problems as ageing apps, plus one more that lands directly on your bottom line: they're expensive to run.
Legacy backends typically run on servers that are provisioned for peak load and billed around the clock, with licences, maintenance and patching on top. You pay for capacity you rarely use, and every outage is your problem.
Modern approaches scale with your actual demand, so quiet nights cost pennies and busy launches just work. It's common for the monthly running bill to drop dramatically after modernisation, and that saving repeats every month, forever.
Rebuilt APIs respond in a fraction of the time, which your customers feel as an app that's quick and dependable. Speed shows up in reviews, conversion and retention.
Modern managed platforms handle the patching, scaling and failover that used to need a person on call. Your product stays up, and your team stays focused on the roadmap.
We can modernise your backend alongside the app or as its own engagement, and the audit will tell you honestly whether it's worth doing now, later, or at all. Sometimes the existing backend is fine, and we'll say so.
You've probably been burned by open-ended day rates. Modernisation here is fixed price, scoped from your actual codebase, with milestone payments tied to verified progress.
Delivered within 24 to 72 hours, guaranteed. Credited against your project if you proceed within 60 days.
Priced per thousand lines of hand-written code, on a declining scale, so larger codebases get better rates.
New features and visual redesign are quoted separately, so your fixed price stays fixed. The quote covers the codebase as audited, and anything added mid-project is scoped as a change.
Send us a message with what your app does, roughly how old it is, and what frustrates you most about it. We'll give you an honest view of what modernising it would involve and what it would fix.
hello@francisbeasley.co.uk