Aufgabeln! 2026

Do you know how much food you throw away at home? With our Aufgabeln app, it’s easy to track: What goes to waste? How much, and why? And how much money will you save by reducing your food waste?

There is little data available on food waste in private households. As part of the «Aufgabeln!» project, hundreds of people had been measuring food waste in their homes over a 14-day period in September (31 August – 20 September).  

Aufgabeln! 2026 took place as part of the «National Week Against Food Waste» in September. The project is being implemented in collaboration with the cantons of Aargau, Basel-Stadt and Baselland, as well as the cities of Bern and Zurich, and the Seedling Foundation. 

Results

The results of the measurement phase will be presented at the four closing events. Anyone who signs up for the Aufgabeln newsletter will receive all the key information about this in October.

18 November in Aarau – from around 18.30 pm

21 November in Bern – from around 10.00 

24 November in Zurich – from around 18.00 

25 November in Birsfelden (BL&BS) – from around 18.00 

We’ve set up a WhatsApp group for any questions, information and dates relating to this year’s edition of Aufgabeln!.

The Aufgabeln! app is available for free in all major app stores. The data entered is collected and processed by catta.

Project background

The citizen science project Aufgabeln! Measuring Food Waste Together, was launched in 2023 in collaboration with the Department of Construction, Transport and Environment of the Canton of Aargau, and was carried out again in 2024.

The aim of this year's implementation is to attract more participants and gather meaningful data on the amounts and causes of food waste at household level. Additionally, Aufgabeln! promotes a more mindful approach to food consumption. This is important because around one-third of all edible food is lost or wasted from field to table. A significant proportion of these losses occur in private households.

Food Waste Data in Private Households

During the three-week measurement phase, participants use an app to document the amount and reasons for food waste in their household daily for 14 days. This provides valuable insights into food waste in a domestic setting, offering a direct perspective from the participants' daily lives. At the same time, the project encourages reflection on personal behaviours and demonstrates practical solutions.

Long-term Benefits

These insights serve to raise awareness not only among project participants, but also among the general public. Public closing events and discussions, as well as a comprehensive and personalised evaluation of the data, contribute to raising awareness and developing strategies for reducing food waste.

The Aufgabeln! app was developed on behalf of catta for the project. It remains available beyond the measurement phase, establishing Aufgabeln! as a long-term tool promoting transparency, reflection and a more mindful approach to food in everyday life.