Case study 04Citizen reportingClient: Promet i prostorLive

Popravimo

A citizen issue-reporting app, rewritten from scratch in Flutter.

The Karta tab for Grad Sveta Nedelja: a Google map with report clusters marked 50+ and 10+ and single report pins in green and brown — The newest build in a read-only guest session.

The empty Nova prijava form: an add-photo card with a Slikaj button, a 200-character description field, the location Grad Sveta Nedelja and a disabled send button — The newest build in a read-only guest session.

Citizens report potholes, broken lights and other problems with a photo and their GPS position. For Promet i prostor we rewrote Popravimo from scratch in Flutter and shipped it to both app stores, with a clustered live map.

Role: Rewrite and release, both stores
Client: Promet i prostor
Status: Live
Site: popravimo.hr (opens in a new tab)

App Store (opens in a new tab) Google Play (opens in a new tab)

The brief

One app for every city on the client's platform.

Popravimo lets citizens report what is broken in their city and follow it on a public map. The client, Promet i prostor, runs the platform behind it for several cities. We rebuilt the app from scratch in Flutter: camera-first reports, guest mode, Croatian and English, dark mode, and one build that serves every city.

System map

How it fits together

System map of Popravimo. The four stages next to it describe each layer in words.

1
Citizens on the streetCamera-first reports with a photo and the GPS position
2
One build, the right cityA GPS geofence call loads the city, a native clustered map shows reports
3
The client's platformReports go to the PiPGIS API, Promet i prostor's own platform
4
Three hard partsMany cities, one app

Three hard parts

Many cities, one app

One build, every city
Each city has its own setup, but nobody should install a different app. A GPS geofence call picks the right city configuration, so a single build serves each city.
A map that stays quick
The map has to stay smooth with many reports. Native marker clustering; tapping a cluster zooms in and batch-loads up to 30 of its reports.
Shared reports open in the app
A link to a report should land on that report. app_links deep links open /reports/<id> and /auth/verify straight in the app.

On screen