Theobase GmbH Digital tools with a purpose
Current theme: System

Theobase · application

A neighbourhood that stays in touch.

QuartierApp connects neighbours, families and neighbourhoods so that nobody quietly slips out of view. Simple to use — especially for people who are often left alone with the usual technology.

Closed pilot · access by invitation

At a glance

Application
QuartierApp / nachbar·io
For whom
Older people · relatives · neighbourhoods
Status
Closed pilot (2026)
Access
invitation code only
Data
EU, sparing

01 — The problem

Who notices when someone quietly slips out of view?

Closeness happens less on its own these days. People living alone do not always get in touch — and relatives often live far away. The intention to drop by is easily postponed, until a good thought has turned into a too-late.

QuartierApp wants to close that gap without being intrusive: a quiet line between neighbours, family and neighbourhood.

02 — What QuartierApp does

Stay close, without the effort

Not another loud app. A few quiet paths, so that contact and help stay easy day to day.

Staying in touch

A line that stays open

Neighbours and family stay connected without constantly having to ask. A short hello is enough to make clear: all is well.

Helping each other

Small help, quickly asked for

A bit of shopping, an errand, someone to listen: whoever needs something just asks — whoever can help, sees it. A neighbourhood finding its way back together.

Usable by everyone

Large type, clear paths

Built for people who struggle with the usual technology: calm, understandable, with read-aloud output and visible contrast.

03 — Trust

Data about people who need protecting.

QuartierApp is meant for older people and their relatives. Data like that deserves particular care — which is why privacy here is not a footnote but part of how it is built.

  • Sparing with data, clear roles, processing in the EU. Who sees what is governed in a way you can follow.
  • No selling of data, no tracking, no advertising. The closed pilot starts without any public flow of data.
  • People decide, not automation. The important steps stay in the hands of those involved.

Technology for older people must never be complicated. If it is, I have not done my job.

— Thomas Theobald, founder of Theobase GmbH

04 — Where it stands

A closed pilot — deliberately small.

QuartierApp currently runs as a closed pilot with individual families. No public launch, no advertising — first it has to hold up in real everyday life, then it opens.

If you are a neighbourhood, an institution or a family this might fit, I would be glad to talk.

05 — Taking part

Does QuartierApp fit your neighbourhood?

Pilot partners and relatives who want to be involved early are best off getting in touch directly.