Kronstadtsoft

Web and mobile applications

We build custom web applications, mobile apps and APIs, from architecture to operation. The applications run on cloud infrastructure, with server rendering, automated tests and accessibility checks on every release.

Diagram · Web and mobile application
BROWSERREACT · SSRPHONEIOS · ANDROIDAPIREST · WEBHOOKSDATADATABASEINTEGRATIONSPAYMENTS · E-FACTURABROWSERREACT · SSRPHONEIOS · ANDROIDAPIREST · WEBHOOKSDATADATABASEINTEGRATIONSPAYMENTS · E-FACTURA

Scope

I

What we build.

  1. 01

    Web applications

    React · SSR

    Platforms and browser applications rendered on the server, fast on the first load: customer portals, admin panels, bookings, payments and invoicing.

  2. 02

    Mobile applications

    React Native

    Applications for iOS and Android from a single codebase, published and kept up to date in both app stores.

  3. 03

    APIs and integrations

    REST · Webhooks

    We connect systems to each other: documented APIs, data synchronization and integrations with the platforms you already use, from payments and invoicing to e-invoicing.

  4. 04

    Accessibility

    WCAG 2.1 AA

    Before every release, we test every public page automatically against the WCAG 2.1 AA criteria. On request, we also do the manual check against EN 301 549.

  5. 05

    Operation

    Updates · Monitoring

    After launch we maintain the application: security updates, backups, monitoring and new features, by offer.

Work

II

What we have already built.

  1. 01

    Raluca Anghelescu

    Client project

    A booking page for a photo studio in Brașov: the customer picks a session, a day and a time and pays the booking fee online. The invoice is issued automatically from SmartBill, with e-Factura.

    See the project
  2. 02

    Arhiplin

    Own product

    A registration and ticketing platform for events: the organizer publishes the event page and the tickets, and participants register without an account.

    See the project
  3. 03

    Patrimoniu

    Own product

    A portfolio tracking application built around AI agents: through its own MCP server, your AI assistant reads and manages the portfolio, within the limits you approve.

    See the project

How we work

III

From the first conversation to operation.

  1. 01

    First conversation

    Your needs

    We talk through what you want to build, who uses the application and which systems it has to work with.

  2. 02

    Analysis and proposal

    Offer

    We set the requirements, the architecture and the acceptance criteria, then send you the written offer.

  3. 03

    Development

    Fixed price

    We build the application at the fixed price in the written offer and show you the progress on a test environment.

  4. 04

    Launch and operation

    Monthly

    We launch the application, monitor it and maintain it after launch.

Rates

IV

What it costs.

Terms

Operation
a monthly offer, after launch

Book the first conversation

Tell us what you want to build or improve. We propose a few days and times for the first conversation.

Send us a messagecontact@kronstadtsoft.ro