Subscription web apps
Our EasyFlow app — invoice approval for e-conomic. Pay a monthly fee, log in, use it. We host and maintain it.
Sigma-Tau ApS · Køge
Web apps you can subscribe to —and a developer you can hire.
We're a small Danish IT company in Køge. We build and run a handful of subscription web apps (mostly for finance teams using e-conomic), and we take on consultancy projects when the work fits.
- founded in Køge
- 2017
- integrated with e-conomic
- e-conomic
- hosted in the EU · GDPR
- EU
- people — you talk to us directly
- 2
01 — What we do
What we work on
We're generalists by necessity, but most of our work falls into a few familiar areas.
Custom development
Internal tools, dashboards, small line-of-business apps. Usually Angular on the front, Java or Node on the back, hosted on Azure.
System integration
Getting your accounting system, ERP, Microsoft 365 and that one legacy database to actually talk to each other without daily breakage.
Consulting & second opinions
Architecture reviews, code audits, or just a few hours of "how would you approach this?" — by the hour, on contract.
02 — EasyFlow
From pile to posted.
Invoices land in EasyFlow from email, e-Boks, upload or the phone camera. They are read, coded and approved — and the approved invoice goes straight back to e-conomic.
Email
e-Boks
Upload
Photo
- 1 OCR & extractionAzure AI reads the invoice
- 2 CodingAccounts & dimensions suggested
- 3 ApprovalRules, delegation, escalation
- e-conomicPosted & matched
03 — Consulting
How consultancy works with us
No big retainer, no surprise invoices. You hire us for a defined piece of work, we do it, you pay for the hours we used. Here's roughly how we set it up.
A short contract first
Before anything starts we write down what we're doing, what's in scope, what isn't, and the rate. One or two pages — enough to keep us both honest.
Hours, not estimates pretending to be prices
We track hours and tell you how many we've spent. If something is going to take longer than we thought, you hear it from us before the invoice does.
Your data stays your data
We're GDPR-compliant and sign a data processing agreement when it's relevant. We don't reuse your code or data on other projects.
Remote by default, on-site when needed
Most work happens remotely from Køge. If you want us in the room for a workshop or a kickoff, we'll come.
A typical engagement
- 1You tell us what you need.A phone call or a meeting — what's the problem, what's the deadline, what's the constraint.
- 2We send a short proposal.Scope, approach, estimated hours, hourly rate. If it doesn't fit, we say so.
- 3We do the work and stay in touch.Weekly status, or more often if things are moving fast. You always know where we are.
- 4We invoice what we used.Monthly, with a breakdown. No padding, no "miscellaneous".
04 — Strengths
Where we're strongest
We've spent a lot of years on these areas in particular.
Finance & accounting integrations — e-conomic above all, plus the usual suspects (invoice flows, exports to other ERP systems).
Microsoft 365 & identity — single sign-on, Graph API, Teams apps. The kind of integration that's tedious to get right the first time.
Web app plumbing — Angular front ends, Java back ends, REST APIs, Azure hosting. Boring, dependable, well-tested.
05 — The team
Who we are
Sigma-Tau is the two of us. You'll talk to us directly — no account managers in between.
Thorbjørn Tau Beblein
Development
Does the building. Mostly Angular and Java these days, with a long history of system integration work — talking to e-conomic, Microsoft 365 and whatever else needs to be on the other end of an API.
Susanne Beblein
Administration
Runs the office side — contracts, invoices, and making sure customers don't fall through the cracks. If you have a question about your subscription or a quote, she's the one to ask.
Want to talk?
Drop us a line. We'll tell you honestly whether we're the right fit — and if we're not, we usually know someone who is.
Legal & compliance
Terms & conditionsWhat you get from us, and what we expect in return.Privacy policyWhat personal data we collect, why, and how long we keep it.Cookie policyWhich cookies we set on this site, and what they do.Data processing agreementFor when we handle data on behalf of you as a customer.AccessibilityHow we try to keep this site usable for everyone.