SINA
Your personal assistant.
You only talk to SINA. SINA reads across your apps, prepares the work and suggests your next step.
For freelancers and small businesses
Hand off annoying tasks. Effortlessly done with your self-learning AI assistant.
Paperwork off your desk. Customer communication simplified. Every detail at hand.
AI from the EU, no data retention. Nothing happens without your approval.
Hours back, every week.
Beta for Mac and Windows · Pro from €39 per week
What’s on today?
2 stepsCalendar · Today · 2 events
Two events: 11 am check-in with Studio Nord, 3 pm workshop with your team. The agenda is in the project folder.
Message SINA
The problem
You know your business.
But AI lacks the context.
You know your processes.
But no software quite fits.
You know the value of AI.
But compliance gets in the way.
The solution
Your secure
AI workspace.
Your knowledge, your tools and your team. Connected in a workspace that belongs to you.
Brain
You don’t have to start from scratch.
Your Brain retains knowledge and context for SINA to build on. Your data stays local.
Tasks
Say it once. Done every time.
Tell SINA what should happen regularly. SINA handles it in the background and comes back with a result for you to review.
Apps
As individual as your work.
Install the apps you need. Or build your own to fit the way you work.
Collaboration
Your workspace. Shared, too.
Share knowledge, apps and results with your team or customers. You decide who can view and edit what.
Automation for everyday work
Automate the routine.
Reclaim your time.
Tell SINA what should happen and when. SINA connects your apps and knowledge — and recurring tasks run on their own.
- Start my morning briefing with SINA at 8:00 AM.
- Prepare a reply with SINA when new Mail arrives.
- Send approved updates to my team via WhatsApp.
- Collect new receipts from Mail in Finance.
- Prepare for my Calendar meetings with SINA.
- Summarize my Projects every Friday.
Freedom needs a foundation.
Your knowledge.
Stays yours.
Work with AI and stay in control. On a foundation that gives you freedom.
Your data stays with you.
Your knowledge lives on infrastructure you control. Data, apps and SINA work together within your company.
GDPRZDR
Designed with Europe in mind.
Your knowledge stays local and encrypted. The AI runs on Microsoft Azure in the EU – with zero data retention: requests are neither stored nor used for training.
Move forward together.
One workspace for your team and clients. Share knowledge, work on content and move projects forward together.
Allow access?
You can revoke access at any time.
MailAlex Morgan
SINAAssistant
Search and read emails
You decide who can do what.
SINA gets only the access you approve. For a clear purpose, in a specific workspace, and always revocable.
Open Source.
Bring your data, connect your existing systems and build your own apps. To us, sovereignty means connecting what you already use — without new silos or vendor lock-in.
That is why we plan to open-source Abrum Core soon: the foundation for sync and permissions. So you can inspect and extend the technology itself.
The first step is yours.
Three steps
to your workspace.
Start with one task from your day. Your workspace grows with what you want to do.
- 01
Download Abrum.
Choose the version for your Mac or Windows PC and set up your personal workspace.
- 02
Connect your knowledge.
Add files and apps. Approve the context you want SINA to work with.
- 03
Get started with SINA.
Give SINA your first task. Get help summarizing, preparing and thinking ahead.
Visionary architecture
The future of AI
is decentralized.
Your data belongs to you. You decide what to do with it. Apps and services provide functionality — you retain control of your data. That is why we built the decentralized permission system that powers Abrum.
Peer-to-Peer communication
Your devices sync shared workspaces directly with one another.
Micro-Chain Architecture
Signed, linked versions make the origin and changes of your data verifiable.
Local-first by Design
Your knowledge lives on hardware you control, wherever it is located. You choose which workspaces to share.
Self-Signed Identities
Your devices generate their own keys and prove their identity with cryptographic signatures.
Decentralized Permission System
Access rights are signed and bound to workspaces. Each station verifies them independently.
Encrypted transfer
Your stations transfer data over encrypted connections, keeping it protected in transit.
Hand over the groundwork
Your time
is worth more.
Let SINA sort requests, prepare replies and handle recurring tasks. Pro gives you more time for your customers and the decisions that matter.
Pro
For everyday work€99/ month
Incl. VAT · billed monthly
Savings compared with weekly billing over a year (52 weeks).
- AI credit included, renews every month
- Your own Brain with your sources
- SINA, apps and automations
- Sharing for your team and customers
- On your own infrastructure
Ongoing subscription. Cancel at any time to end at the close of the paid period.
Buy Pro nowSecure payment via Stripe
Sold and invoiced by Hue Ventures GmbH (Merchant of Record). Service provided by Abrum UG (haftungsbeschränkt).
Ultra
For teamsIn development
More room for your team.
- Everything in Pro
- More AI capacity for your team
- Shared workspaces and knowledge
- Use SINA and apps together as a team
- Manage access for your team and customers
Not available yet
The people behind Abrum
Built from experience.
For what comes next.
Thomas Pichler
Co-Founder · Transformation & Scaling
Has built and led IT for twenty years — as a developer, process manager, project and programme manager, and most recently as COO. He has occupied every seat at the table and shaped systems from each one: from scalable architectures to organisations that sustain themselves. He works from the inside: taking ownership, exposing the bottleneck, rebuilding what already exists and enabling people to continue without him. TU Graz, Software Development and Knowledge Management.
Robin Huse
Co-Founder · Product & Technology
Has built numerous startups – first in augmented reality, then crypto, and today AI. He has developed full-stack software for more than fifteen years, from infrastructure to interface. Driven by a passion for technology and the ambition to create solutions that help people and simplify processes. Mainz University of Applied Sciences, Master's in Time-Based Media.
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What exactly is Abrum?
Abrum is a local AI operating system for your business. You talk to SINA, your personal assistant. Your data and apps are organised in separate workspaces, giving every context a clear boundary and its own permissions.
Where is my data stored?
On a station you control. Every workspace has its own local data store. Content is signed and can be synchronised directly between your devices or approved stations, without a central server acting as the sole source of data. Only when you ask SINA something is the context it needs sent to the AI.
Which AI does Abrum use – and what happens to my requests?
Your Brain, files and workspaces stay on your devices. To answer, SINA sends only the excerpt a task needs to GPT-6 Luna. The model runs in Microsoft Azure data centres in the EU; falling back to other providers is technically blocked. With zero data retention, requests and responses are not stored after processing and are not used to train AI models. Requests are relayed by our service provider OpenRouter.
What can SINA access?
Only the workspaces and app functions you explicitly grant. Abrum checks every read operation and action again. A visible app or selected workspace alone does not give SINA permission.
What does Warden do?
Warden is Abrum's approval layer. Before SINA receives protected access or changes anything, you see the destination, purpose, scope and duration. Only your signed approval creates a limited permission that can expire or be revoked at any time.
Can the AI see my passwords or API keys?
No. Apps declare which credentials they need for a specific function. After the permission check succeeds, the station applies those credentials on the server side. Plain text never enters the chat or the AI model's context.
Can I involve my team or customers?
Yes. Access is granted per workspace as read, edit or manage. You can share a complete project workspace or only the exact context required for collaboration.
Can Abrum connect existing systems?
Yes. Apps bring their own data structures and clearly defined functions and are installed in the appropriate workspace. Email, project tools or specialist processes can be connected while credentials remain sealed and permissions stay separate.
Get started
Your next step
starts here.
Get the beta for your Mac or Windows PC. With Pro, connect your knowledge and start your first task with SINA.