Content rating
Everyone
10+
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Content rating
Everyone
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About this app

ZERO Complaint is an application developed by the ZERO Association that allows citizens to report problems related to urban mobility in a simple, fast, and effective way.

Through the application, you can register complaints about:

• Delays in public transport

• Problems with pedestrian or cycle paths

• Infrastructure in poor condition

• Incomplete or incorrect public information

Each complaint can include:

• The type of problem detected

• An additional description (optional)

• The location where it occurred (optional)

• A photograph to document the situation (optional)

Submitted complaints are sent directly to the ZERO Association system, which is responsible for analyzing and forwarding each case to the competent entity, ensuring proper follow-up.

The user can check the status of their complaint at any time through the application.

ZERO Complaint promotes active and participatory citizenship, contributing to the improvement of urban mobility conditions in Portugal.

Be part of the change — register your complaint and help make cities more accessible, safe, and sustainable.
Updated on
Feb 18, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info and Photos and videos
Data is encrypted in transit
You can request that data be deleted
Content rating
Everyone
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App support

About the developer
ZERO - ASSOCIAÇÃO SISTEMA TERRESTRE SUSTENTÁVEL
zero@zero.ong
AVENIDA ANTÓNIO SERPA, 32 6ºC 1050-027 LISBOA Portugal
+351 965 087 046