Software company · Stockholm, Sweden
Royan AB is an established software company in Stockholm. We design and build AI agents, RAG systems and native apps for Android, iOS and macOS, and we advise teams who are doing the same.
What we build
From a single Android feature to an agent that runs your support queue. Every project is led by a senior engineer, from the first call to the release.
Agents that call your tools, answer from your documents and keep a record of what they did.
Built with each platform's own tools, so they feel right in the hand and pass store review.
The backend, cloud and website around your product, built to be run for years.
AI agents and RAG
Most AI projects stall between the demo and production. We build the parts that close that gap: retrieval that finds the right passage, tools with narrow permissions, evaluations that catch regressions, and logs you can audit.
QWhat is the refund policy for annual plans?
Annual plans are refundable in full within 30 days of purchase, and pro rata after that.Sources: Terms of Service §7.2 · Billing FAQ. Illustrative example.
Agents that plan, call your APIs and finish multi-step tasks. Where a person should decide, the agent stops and asks. We build MCP servers so tools like Claude, Cursor and your own agents can use your systems safely. More on AI agent development
Answers grounded in your own documents, with a citation for every claim. We handle ingestion, chunking, hybrid search, re-ranking, and the evaluation set that proves accuracy went up, not down. More on RAG system development
Assistants that reply in your customer's language, look up orders in your CRM and hand the conversation to a person with a summary when they should.
We attack your AI features before someone else does: prompt injection, poisoned documents, data leaks and unsafe tool calls. Then we add guardrails and monitoring, and document it for GDPR and the EU AI Act.
Selected work
Our own apps are signed and notarized under Royan AB's Apple Developer ID, open source, and used every day. Client work gets the same care.
macOS · SwiftUI · MCPThe missing control panel for the Android Emulator on Mac. Nearly 50 test actions in one click, a Layout Inspector in dp, and an MCP server that lets Claude Code, Codex and Cursor drive the emulator.
Read the case study
macOS · 1,300+ downloadsReal-time synced lyrics for Spotify and Apple Music in the Mac menu bar, with word-by-word highlighting and translation into 43 languages.
Read the case study
macOS · Mac App StoreLive, word-by-word lyrics for Mac, available on the Mac App Store. Every word lights up the moment it is sung.
View the productConsulting
Some teams need a product built. Some need a second opinion before a big decision. Some need another senior engineer next week. More about consulting
For a product you need built
We take an app, an agent or a platform from idea to launch: architecture, design, development, testing and release.
For a big technical decision
Architecture reviews, code audits and AI strategy from engineers who have shipped what you are planning.
For a team that needs senior capacity
A senior engineer inside your team, in your tools and rituals, for as long as you need one.
Call us on +46 73 598 79 90, or email. We reply within one working day, in English or Swedish.
How we work
Week 1
Goals, users, constraints and what success looks like, written down and agreed.
Week 1–2
Architecture, data model and the risky parts proven first with a spike.
Every week
Working software you can try, a short written update, and no surprises on the invoice.
Before launch
Tests, evaluations for AI features, accessibility, security and performance checks.
After launch
Store release, monitoring, handover to your team, or ongoing support.
Technology
Company
Royan AB is a Swedish limited company (aktiebolag) in Nacka, Stockholm. We build software for companies in Sweden and across the EU, and we publish our own apps for Mac, Android and iOS.
Every engagement is led by a senior engineer. We agree on what we will deliver, then deliver it, and hand over the code, the documentation and every account to you.
The person on the first call is the person who writes the code. No hand-offs to a junior team.
AI features ship with evaluations. Apps ship with tests and performance budgets.
Source code, cloud accounts, store listings and documentation are yours from day one.
Questions
Royan AB is a software company in Stockholm, Sweden. We build AI agents, RAG systems and native apps for Android, iOS and macOS, and we offer IT consulting: architecture reviews, code audits, AI strategy and senior engineers embedded in client teams.
Yes. We build the whole pipeline: ingestion of your documents and data, chunking, hybrid keyword and vector search, re-ranking, answers with citations, and an evaluation set that measures accuracy before and after every change.
Anthropic Claude, OpenAI GPT models and open-weight models. We pick the model per task by running your own examples through an evaluation, then balance quality, latency and cost.
Yes. We can host vector stores and application servers in EU regions, choose model providers and settings that meet your data-processing requirements, and design for GDPR from the start.
Both. We build native apps in Kotlin and Jetpack Compose for Android, and Swift and SwiftUI for iOS and macOS. When one shared codebase is the better trade-off, we use Flutter.
It starts with a 30-minute call about your goals. After that we propose a fixed-scope review, a project with milestones, or a senior engineer embedded in your team, whichever fits.
In Nacka, Stockholm, Sweden. We work with clients across Sweden and the EU, remotely or on site in Stockholm, in English or Swedish.
Contact
+46 73 598 79 90
Email us a few lines about your goals and we reply within one working day.
Monday to Friday
09:00–18:00 CET
English and Swedish
