Data Accuracy Approach - The Reewild App

When creating the Reewild app, one of the challenges we faced was ensuring the availability and accuracy of food carbon footprint data, to inform and not mislead users. To that end, we've developed a transparency scale to disclose the sources of our data, the variation in accuracy, and how our methodology serves as a feedback loop to improve accuracy as we scale. We follow a "good over perfect" principle, which acknowledges the limitation of existing data, but strives to provide consumers with the most comprehensive database of carbon scored products on the market.

Today, our app acts as a central repository that pulls together all available carbon data on food and drink products into one database and harmonises it to the same system boundaries. Where data on certain food products has yet to be made available, we have carried out estimated carbon scoring, underpinned by databases comprised of thousands of peer-reviewed scientific studies. This approach provides our users with a uniquely comprehensive dataset, helping them to understand and compare the impact on any product on the market. 

Data Accuracy

As a climate transparency platform, we encourage brands to conduct accurate carbon calculations through our best-in-class carbon accounting partners, and invite them to join our climate transparent community.

The carbon accounting calculators we work with all use similar methodologies, and follow the standards set out by ISO14040 and GHG Protocol. In most cases, the carbon scores are calculated using a combination of primary and secondary data. All the scores in our platform use the same system boundaries - factoring in the emissions from cradle to grave.   

The products for which we have estimated the carbon scores, due to a lack of available information, are clearly sign-posted as being low accuracy and deprioritised vs higher accuracy products. This also serves to challenge and incentivise these brands to disclose their climate impact. 

Positive Feedback Loop

Journey to Better Data Feedback Loop


As more brands conduct primary LCAs, consumers are given a more accurate picture of food product carbon footprints. This also creates a collaborative circle of data collection, providing greater insight into different supply chains and life-cycles. By collecting more primary data, it creates a positive loop that feeds into the bottom end of carbon emissions data, making general estimations at the “low” end more and more accurate. This loop results in more cost-effective ways for businesses to calculate accurately, while also providing consumers with better insights into how to reduce their carbon footprint. 

In-app Accuracy Dial Categories

The data accuracy dial

Very Low 

This is the lowest level of data accuracy in our database. For these products we have had to estimate the weight of each  component ingredient, due to a lack of more accurate publicly available data. Each ingredient has then been matched to our open source carbon footprint database -