ttTechTinker

Stockholm, Sweden

We build software that has to be right.

TechTinker is a Swedish software company. We build and run our own products, in areas where being wrong is expensive — where the number has to balance and the time has to be correct.

See what we build

Products

What we build.

Batzen

Live

Accounting, payroll and tax filing for small businesses

Invoicing, bookkeeping, payroll and VAT filing in one place. Batzen submits VAT declarations and employer payroll returns directly to the Swedish Tax Agency, keeps an append-only ledger on the Swedish BAS chart of accounts, and produces K2 annual reports. Built for small companies and the accounting firms that serve them.

  • VAT + payroll filing
  • BAS chart of accounts
  • K2 annual report
  • Multi-currency, ROT/RUT
  • Accountant portal
  • Swedish and English
Visit batzen.io
The Batzen dashboard with revenue, unpaid invoices, payments over time, invoice status and the latest ledger entries.

Dashboard

citytap

Coming soon

Real-time public transit, across Sweden

Live departures from every stop, door-to-door journey planning, saved routes and recurring trips that tell you when to leave — on a map where vehicles move in real time as they run. Riders can report what they see on the network, from disruptions to safety concerns, so the people travelling behind them know before they board. Starting in Sweden, built to extend across Europe.

  • Live departures
  • Journey planning
  • Vehicles on the map
  • Rider reports
  • Safety alerts
  • Departure reminders
The citytap map of Stockholm with stops and vehicles in real time, and departures from T-Centralen.

Map and departures

Company

Our own products, end to end.

TechTinker AB is a Swedish limited company based in Stockholm. We build and operate our own products — from the first line of code through to operations, support and compliance.

We work against systems where mistakes surface immediately: filings that have to balance, departure times someone plans their morning around. That shapes how we build.

  1. Product engineering

    Design and development in-house, from the first sketch to the shipped release.

  2. Operations

    We run our own systems — databases, integrations and monitoring.

  3. Compliance

    Government integrations, data protection, and the rules each product answers to.

  4. Support

    We answer the questions about the products we built ourselves.

Contact

Get in touch.

Questions about the products, partnerships or support — send us an email.

support@techtinker.se