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Send an enquiry

What happens after you get in touch

No long waits and no obligation.

  1. We reply

    Within one working day, by email or phone, with questions if anything is unclear.

  2. Proposal and price

    We send a proposed solution and an estimate, with a timeline.

  3. Prototype

    For websites and applications you see a prototype first, and only then do we build.

  4. Agreement

    Once everything is clear, we sign the quote and get started.

Who we are

803 is the joint brand of two Zagreb companies.

Osam nula tri d.o.o.

Websites, applications and digital agency

  • Pavlenski put 5 O, 10000 Zagreb, Croatia
  • OIB (tax no.) 87811813942
  • VAT ID HR87811813942

Tvister Terato d.o.o.

IT solutions, development and Lab projects

  • Pavlenski put 5 O, 10000 Zagreb, Croatia
  • OIB (tax no.) 80373390070
  • VAT ID HR80373390070