ctzen

Software for people.

Tools for the moment the city asks you to decide.

I build tools that take public data scattered across PDFs, lists and portals and make it useful to one person, at one specific moment.

Live now

All projects
Live · soft launch BlocCheck

Find out what the listing doesn’t say about the building.

Type the address of a block in Bucharest and get a report from public data: seismic risk, construction year, hot water outages, insulation, the notary price grid. Every fact has its source next to it.

buildings in the database
134,333
apartment blocks
14,226
entries on the seismic risk list
2,796
public sources
12+

Data as of October 2026. Sources: AMCCRS, Termoenergetica, CNPB, Apele Române, OpenStreetMap, the sector town halls, USGS images 1972–1984.

Live · expanding nationwide Decontat

Clinics with a CNAS contract for lab tests and imaging, with phone numbers and opening hours.

For anyone with a referral who wants to call the right clinic quickly. No account and no cookies. Every clinic shows when it was checked; anything that couldn’t be confirmed shows “We don’t know”.

clinics on the site
1,157
counties on the site, plus Bucharest
32
clinics in Bucharest
230
counties in progress
5

Data as of 2 Nov 2026: 1,157 clinics in Bucharest and 32 counties, all published on the site.

How I work

A source next to every fact
In a BlocCheck report, every line says where it comes from: the AMCCRS list, Termoenergetica, the notary price grid.
The date it was checked
In Decontat, every clinic shows “Checked on”, so you know how fresh the information is.
“We don’t know” instead of a guess
The construction year is known for ~71% of apartment blocks. For the rest, BlocCheck says it doesn’t know.BlocCheck data, November 2026
Phone first, for anyone
Decontat is designed for someone over 65 calling on their own: 56px call buttons, WCAG 2.2 AA, under 2 minutes to the call.

Coming up

  1. next step

    BlocCheck in another city: Iași, then Constanța.

Work with me

If you need a project built

I work as a freelancer, with an invoice.

  • Tools that gather public data from PDFs, lists and portals and make it easy to search.
  • Fast, accessible websites with no cookies, which you can update yourself.
  • AI and computer vision prototypes, from idea to demo.

If you want to fund or partner

  • BlocCheck is looking for funding to expand to Iași and Constanța and for its business reports: banks, insurers, property portals.
  • Decontat is looking for sponsors and institutional partners. A sponsor gets visibility, never a better place in the list.
salut@ctzen.ro