Mickael Romaniello
30 minutes, no slides, nothing to prepare.
Mickael Romaniello
30 minutes, no slides, nothing to prepare.
12 years of experience. 15+ apps delivered. One dedicated point of contact.
In short: I build iOS and Android apps for clients in London (8,982,000 residents) and across England. One single point of contact, 12 years of experience, delivery from concept to publication in 8 to 16 weeks.
Some of my clients have been working with me for years. Why? Because I don't vanish into thin air once the iOS or Android app is published.
Based in Bordeaux, I support my clients over the long haul. During my 12-year career, I've learned that launching an app is just the beginning of the story. You have to improve it, maintain it, and listen to the users.
The most important factor is this rigorous follow-up. I am here to stand by you for the long term, like a true partner. It's a matter of trust.
You are not looking for an agency. You are not looking for a code factory. You are looking for a partner.
I am a freelance mobile app developer.
The key advantage: you have one single point of contact from start to finish. Me.
No account manager acting as a buffer. No salesperson selling you impossible dreams. And most importantly, no junior developer hidden in the back room learning the trade on your dime.
Have an idea for the London market or for the rest of your United Kingdom? We discuss it directly.
Today, 63% of global web traffic comes from mobile devices (Statista, 2025).
Your future users are already on their phones.
But they are demanding.
They click. They quit. They forget.
Many people think a developer just types on a keyboard in a dark room.
That is not my vision of the job.
Being a mobile expert in London means mastering the product from A to Z.
I handle concept validation.
I think about user experience (UX).
I design the technical architecture.
I develop, test, publish to the stores, and provide ongoing maintenance.
The key point: no context is ever lost.
There are currently over 24,000 active Android device models worldwide (Google, 2025).
Making an app run flawlessly across all those screens requires absolute rigor.
It is not just about making things look pretty.
We must strictly follow Apple's Human Interface Guidelines and Google's Material Design.
The mobile user is on a train, in the street, or on their couch.
They do not want to think in order to navigate.
I ensure your interface is logical, instructive, and immediately understandable for your audience in the England area.
It is a comprehensive craft that demands a global vision of the mobile ecosystem.
This is exactly what I offer to businesses in London.
London is one hour behind me, which in practice means we work the same day — a question at ten is answered by eleven. It is the closest thing to working with someone in the same office that remote work allows, and it is why most of my English-language projects have been British ones.
That overlap is worth more than it sounds. On a project spread across a real timezone gap, a single misunderstanding costs a day: you ask, you wait, you get an answer that reveals a second question, you wait again. With London, the same exchange happens over a coffee break. Over a three-month build, that difference is not a convenience, it is several weeks of calendar time that never get lost to waiting.
London projects tend to arrive further along than most. People have usually done market research, sometimes have a designer already engaged, and often have a clear view of who the app is for. That makes my job narrower and more useful: not deciding what to build, but saying honestly what each part costs, which pieces can wait, and where the design as drawn will fight the platform rather than work with it.
The one thing worth settling early on any UK project is where the data lives and which rules apply to it. Since the UK left the EU it maintains its own data protection regime alongside GDPR, and if your users are spread across both, you are working under both. I am not your lawyer and will not pretend to be, but the practical consequences land in the architecture — where the database sits, what gets logged, how long records are kept — and those are decisions that are cheap on day one and expensive after launch.
You are launching your project in London.
And you are probably wondering who to work with to build your mobile app.
It is the first major decision you have to make. Some people think that to succeed, you absolutely need a big agency right around the corner. Others believe they should outsource to the cheapest team they can find overseas.
Both options come with serious tradeoffs.
A big agency will assign your project to a junior developer you have never met. An offshore team will deliver code you cannot read, three weeks behind schedule, with zero accountability.
The most important factor in the success of an app is not just the code. It is communication.
When you work with me, you get one dedicated expert with 12 years of experience and over 15 delivered projects. Not an account manager. Not a rotating team. One person who knows your project inside out.
With Invent Better you get an installable build every two weeks, even when it is incomplete. That is the difference between following a project and waiting for one. You have access to the code repository from day one, and every decision is written down rather than remembered. A disagreement surfaces after two weeks, not at final delivery.
Software development is far too often treated as a terrifying black box.
In many traditional projects, you sign a massive specification document, you pay a hefty deposit, and then you just wait. For months, you receive nothing but vague updates. A few reassuring emails. A lot of "trust us, it is coming along great."
And then the day of the final big reveal in London arrives... and your heart sinks. The product looks and feels nothing like what you envisioned. But it is entirely too late, and your budget is completely gone.
The most important factor: when you work with me, that black box simply does not exist. Everything is entirely transparent.
Chaos has no place in software development.
For an application to succeed, it needs a strict framework.
The key point: we always start with the specifications document.
It is our moral contract.
We define exactly what the app will do, screen by screen. We eliminate ambiguity.
Next comes development. I do not disappear into a cave for three months.
You get access to the app on your own phone during its creation.
You see the progress in real-time from London.
Then comes the critical step of store submission.
Nearly 40% of first submissions to the App Store are rejected by Apple (Apple, 2025).
Knowing their rules by heart is an absolute necessity.
Finally, the launch is not the end of our relationship; it is the beginning of your product's life.
I stay by your side for ongoing maintenance and future updates.
This is the level of rigour I bring to every project in London.
One day, a startup founder contacted me with a massive document.
He wanted the ultimate app to disrupt his entire sector in London.
Dozens of screens, complex animations, an internal messaging system...
The most important factor was telling him no.
I reminded him that 80% of initially imagined features are never used by real people (Pendo, 2025).
We spent two days dissecting his idea.
We reduced the 50 pages down to just 5 fundamental screens.
The result? The app was developed and published in 10 weeks instead of 8 months.
He was able to test his concept in the market across his United Kingdom with real users.
He gathered data, and he pivoted his business model based on reality, not his assumptions.
He saved thousands by avoiding building a useless technical monster.
Businesses in London that understand this are already ahead.
With a freelance developer you pay for the work and nothing around it. An agency invoice also carries the office rent, the account manager's salary and the company margin, none of which show up in your app. The practical consequence is that more of the same budget reaches the build itself.
Let's talk about the true cost of a mobile app.
The key advantage of working with a freelance developer in London is that you pay solely for value.
With a large agency, your invoice absorbs the rent for their fancy offices, the foosball table, the account manager's salary, and the company's profit margin.
With me, you pay for expertise.
Every dollar invested goes directly into the code, design, and quality of your product.
You should not look for the absolute lowest price.
That is dangerous, because 77% of mobile users read reviews before downloading (Statista, 2025).
Mobile technology is not just for the general public.
Your employees and partners in London also need powerful tools out in the field.
In medical or fitness apps, managing sensitive data is paramount.
You must reassure the user immediately.
A permission (camera, location) requested too early usually results in a hard no.
The key point: we explain the value, and then we ask for access.
We strictly follow the rules of the CNIL and GDPR.
For your teams on the roads of your United Kingdom, the app must work even without a network.
We handle local storage and automatic synchronization when the connection comes back.
With over 24,000 active Android device models (Google, 2025), your technicians might use a wide variety of terminals.
The interface must remain clear, readable in bright sunlight, and resistant to clumsy handling errors.
In London, this expertise makes all the difference.
The work continues. An application is never frozen in time. With constant Android and iOS system updates, the code must be maintained. I offer maintenance packages to ensure your product always runs flawlessly for the 8,982,000 people in London.
Google now requires new developer accounts to test their application with 20 testers for two consecutive weeks before public release. I guide my clients to structure this testing phase and ensure the app meets Google's criteria without stalling the launch.
The most important factor is being proactive. Do not rely on emails from your users: 96% of them never report a bug if they encounter one (2025). I always install crash detection tools in the background to be alerted instantly.
Absolutely. You can check my LinkedIn profile or my portfolio. I have loyal clients all over the world and in your United Kingdom who would be happy to speak with you about our collaboration.
Yes. As a full-stack developer, I configure all the invisible mechanics (Firebase databases or custom servers, security, APIs) so that your application communicates properly with your existing systems.
This is exactly what I offer to businesses in London.
Ready to launch your app in London?
You have the idea. You know your market in England. Now, it is time to take action.
But not just in any random way. The key advantage of working together is absolute clarity. I will not sell you useless features. I will not make empty promises that I cannot keep.
30 minutes to start
Book →Most of my projects run remotely, and in practice that changes very little. We talk over video whenever you need to, not only at major milestones, and you can reach me with questions at any point during the project — I always answer.
Once we are working together, travelling to meet you on site can absolutely be arranged if your project calls for it. Travel costs are quoted separately, upfront and with no surprises.