Custom integrations
Most companies don't run a single system, but 5–15 different tools — CRM, invoicing, booking, newsletter, ERP, warehouse. The real savings come when these talk to each other. We build exactly that 'conversation', so no human has to sit between two systems.

Booking systems and calendars
BookFor4, Bukio, Google Calendar, Microsoft 365, Cal.com — we work with these regularly. A booking lands in the scheduler, automatically blocks the calendar, sends a reminder and issues an invoice too.
Two-way sync is the key: if someone deletes an appointment from the calendar, it feeds back to the booking tool as well. Conflict-free operation, without manual re-entry.
Invoicing, CRM, accounting
Billingo, Számlázz.hu, KBOSS, the Hungarian NAV online invoicing system, HubSpot, Pipedrive, Salesforce — the standard local and international systems each have their own API. We can fit them together so data flows consistently.
A well-built integration removes the chance of human error and typically eliminates 20–40 hours of administrative work per month.
Custom APIs and webhooks
If there's no ready-made integration, we write one. A custom REST API, webhooks, queue-based processing — whatever it takes for two systems to talk reliably.
As we build, we watch for fault tolerance too: if the target system goes down for 5 minutes, the integration should wait and retry, not lose the message. Logging and monitoring by default.
Frequently asked questions
Which systems can you integrate with?
Any that has an API or data export. The most common local (Billingo, Számlázz.hu, BookFor4, Bukio) and international (Stripe, HubSpot, Mailchimp, Shopify) systems are ready to go.
What if a system changes its API?
Under a maintenance package we monitor for changes and adapt the integration in time. We pin the API version in code by default, so there's no silent breakage.
Can you also build custom import/export?
Yes. CSV/Excel batches, scheduled syncs, real-time streaming — all doable; the volume and nature of the data decides which is practical.