App development for the stores (iOS, Android, Windows)

The starting point

An app idea is the beginning of a great adventure — but technical reality hits fast: three stores, three different worlds. Swift for the App Store, Kotlin for Google Play, not to mention Windows. Three developments, three budgets, three maintenance efforts? That's what discourages most idea owners.

Good news: that's no longer how we work.

Our approach: one idea, a single codebase

1. Mockups first: before writing a single line of code, we visualize your application together. You see and test the concept — that's the best time to adjust, when it costs nothing.
2. One codebase for all three platforms: with cross-platform technologies (.NET MAUI, Blazor Hybrid, or PWA depending on the need), we reuse up to 90% of the code across iOS, Android and Windows. One development, three applications.
3. An MVP with a framed budget: together we define the first version that matters — the minimum viable product — with a clear quote before we start. No unpleasant surprises along the way.
4. Publishing included: we take care of everything, right through to going live on the stores.

Controlled budget, really?

Yes, and here's how:

• MVP first: you only pay for what delivers immediate value; the rest will follow with feedback from your users
• Fixed quote: the budget is set before kick-off, in visible iterations
• 90% shared code: future enhancements cost once, not three times
• Agile method: you validate each step and can change direction without throwing everything away

The stores, without the paperwork

Each store has its rules — we know them:

• App Store (Apple): developer account, certificates, and the famous Apple review — we prepare the app so it passes the first time
• Google Play (Android): signing, required API levels, optimized Play Console listings
• Microsoft Store (Windows): packaging, certification and distribution to your organization's PCs or to the public

Icons, screenshots, descriptions, submissions, updates: it's all included in our service.

What you gain

• You choose the store or stores to publish on, with a single development
• A budget known in advance, spent in validated steps
• A maintainable application: one codebase, simplified updates
• A local partner: your application is developed in Marly, hosted in Switzerland if it has a backend

Who is it for?

SMEs with an idea for a mobile business tool, startups with a concept to validate, organizations wanting a companion app for their existing system. Tell us your idea: in a single meeting, we'll tell you how to make it real and for what budget.