---
title: "NK Group — software, web and mobile app development"
description: "A software studio in Plovdiv. We build websites, web apps and mobile apps with real SEO, accessibility, and hosting on your own infrastructure."
url: https://nkgroupltd.eu/en/
language: en
---

# NK Group — Software that survives the real world

We design and build websites, web apps and mobile apps. We do not ship demos — our products run every day in real buildings, real construction sites and real clubs.

- 5 products in production
- 5 languages shipped
- building since 2023

## Services from idea to upkeep

One team covers the whole path: product design, development, launch and support. No handover between three different agencies.

- **Websites** — Fast sites with real SEO — engineered around your business, not a bought template with the photos swapped out.
- **Web apps** — Internal systems, portals and SaaS products with roles, permissions and an audit trail from day one.
- **Mobile apps** — iOS and Android from one codebase — or a PWA, when making people install something is a pointless barrier.
- **Custom software** — Automations, integrations and backend systems that replace the spreadsheets and the copy-paste between programs.
- **Design & UX** — Interfaces people use without training. Accessibility is a requirement, not a retrofit.
- **Support & hosting** — We launch it, watch it and keep it running. The server, the domain and the data stay yours.

## Products we built and still run

Every one of them has real users today. Open them — these are not mockups.

- **[BuildKin](https://buildkin.eu)** — Proof, not a folder of paper cards. A SaaS platform for building maintenance. QR stickers on elevators, boilers and fire extinguishers that a technician scans to log an inspection in seconds.
- **[BuildingHost](https://buildinghost.eu)** — The construction project, in one place. A construction project management platform — milestone tracking, cost control, tasks and progress reporting.
- **[Optimum Stars](https://optimumstars.vkontech.com)** — Amateur football, organised. A platform for amateur football clubs: balanced line-ups in one click, man-of-the-match voting without registration, match reports and standings.
- **[Vihkin](https://vihkin.com)** — The service history stays with the owner. Digital service history for cars, motorcycles, trucks, trailers and machines. The workshop files its report through a secure link, without creating an account.
- **[Map2Point](https://map2point.com)** — One destination. Everyone on the map.. Live location sharing and group trip planning — one shared map, a separate arrival time for every participant, planned stops and split expenses.

## Four steps, no surprises

1. **Conversation** — We start from the problem, not the technology. An hour of talking saves a month of building in the wrong direction.
2. **Prototype** — A clickable prototype before the first line of production code. You see the product before you pay for it.
3. **Build** — Short iterations with weekly demos on a real environment. Feedback lands immediately, not at the end.
4. **Launch & support** — We deploy on your infrastructure, train your team, and stay reachable with an agreed response time.

## Contact

- Email: developer@nkgroupltd.eu
- Phone: +359 895 096 588
- Location: Plovdiv, Bulgaria
- Response time: Within 1 business day