Custom software and mobile apps

Software made for the way you work.

Off-the-shelf software makes you adapt to it, and often keeps your data wherever its vendor chooses. We build web and mobile apps, booking and management systems, and internal tools around the way your business works, and hand them over so that you own them.

What we build

From a first prototype to a system you run for years

  1. Web applications

    Internal tools, client portals, and dashboards that run in the browser, inside your network or online.

  2. Mobile apps

    Apps for Android and iOS, designed and built end to end: the app people hold in their hands, the system behind it, and the tools you need to run it after launch.

  3. Booking and management systems

    Reservations, scheduling, stock, and back-office systems for the parts of a business no off-the-shelf product fits. Diafa PMS, the hotel management system we built and run ourselves, is one of them.

  4. AI built in

    Search, summarization, classification, and assistants inside your application, on open-weight models running on hardware you control.

  5. Integrations

    Your application connected to the tools you already use: payments, bookkeeping, messaging, and calendars.

Privacy by design

Privacy is decided in the architecture

Most data leaks are designed in: a third-party service added for convenience, logs kept forever, an administrator account everyone shares. We decide where every byte lives, who can read it, and how long it is kept before the first line of code, and we write it down.

The result is an application whose data flows fit on one diagram, so the questions the GDPR asks (what you keep, where, for how long, and who can see it) have short answers. Its source, documentation, and deployment are yours, so you are never locked in, not even to us.

Who this is for

When custom software makes sense

  • Your bookings, orders, or stock have outgrown spreadsheets and email
  • Your way of working is what sets you apart, and no product on the market fits it
  • Your customers or your staff in the field need an app of their own
  • You need a first version built properly, to grow from
  • You would rather own your software than rent it

How an engagement runs

From discovery to handover

  1. Discovery

    We map your users, your data flows, and the rules that apply to your data.

  2. Architecture

    We design where every byte lives and every model runs, and we document it.

  3. Build

    Iterative delivery with working software every few weeks, not a big reveal at the end.

  4. Deployment

    On your own servers or with a hosting provider you choose, in the EU if you need it, and in the app stores for mobile apps.

  5. Handover and support

    Documentation, training, and ongoing maintenance, with source access as agreed.

Custom software

Tell us what you need to build

A mobile app, a booking or management system, or an internal tool: send us a few lines and we will come back with a first take.

Discuss your application
Or write tocontact soulthread.group
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