The calculator that turns
waste into awareness
A collaborative platform where citizens log their household food waste — and see, in real time, how much money and how much CO₂ they are throwing away. Promoted by Auchan Retail Portugal in partnership with Associação DARiACORDAR.
app.contraodesperdicio.pt
Live platform
Auchan Retail Portugal
Sponsor / promoter
DARiACORDAR
Conceptual partner
15,000+
Citizens taking part
20+ Tons
Waste measured
60+ Tons
CO₂ equivalent
€150K+
Financial value logged
01 / The challenge
The waste you don't see starts at home
The biggest share of food waste doesn't happen at the supermarket — it happens in our kitchens. The problem is that no one grasps its true cost: the leftovers that end up in the bin are "invisible", both in the family budget and on the planet.
Auchan Retail Portugal, in partnership with Associação DARiACORDAR, set out to give families a simple tool to make that waste visible and measurable — and, by making it visible, to help them reduce it.
Inovamatic built Contra o Desperdício: a collaborative calculator where each citizen logs what they throw away and gets back the real impact of that act — in euros and in carbon footprint.
02 / The solution
A pocket calculator for everyday life.
Designed for the phone, where waste actually happens. Logging takes seconds; the impact is immediate and easy to understand.
My Waste
June summary
Money wasted
€45.20
Carbon footprint
18.5 Kg CO₂
The double conversion: abstract waste becomes lost money and an ecological footprint.
Log Waste
What went in the bin today?
Food
Sliced bread
Category
Bakery & Pastry
▾Quantity
250 g
Reason
Past use-by date
▾A structured database with 108 categories that standardize every entry.
03 / How it works
Educating by translating impact
The platform's strength lies in translating grams of food into something everyone understands: money in your pocket and impact on the planet.
Log
The citizen enters the food, the quantity and the reason — in seconds, on their phone.
Convert
The system translates the waste into lost euros and CO₂ equivalent, with everyday references.
Raise awareness
Seeing the cumulative impact, the family grasps the real cost and adjusts habits. Aggregated data measures the collective impact.
04 / Promoters
Who is behind the project
Auchan Retail Portugal
Sponsor and promoter of the initiative. It takes the mission of fighting food waste beyond its stores, empowering citizens directly.
Associação DARiACORDAR
Conceptual partner. It brought a decade of experience in circular economy and waste reduction, giving the calculator meaning and methodology.
Inovamatic
Design and development of the platform — from the category database to the impact-conversion mechanics, with a focus on a simple, appealing mobile experience.
05 / Technology
Mobile-first and collaborative
A responsive web application, designed for the phone, with a database that normalizes thousands of citizen entries into coherent metrics.
Want to turn data into awareness?
We build impact and digital-citizenship tools that translate abstract numbers into something people feel and understand. From brand campaigns to sustainability projects.