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An easy way to measure and reduce your carbon footprint. Fight climate change for free

Automatically calculate the carbon footprint of your purchases, understand what the impact means and make better spending decisions

Yayzy also helps you become carbon neutral by contributing to high quality carbon offset projects with the tap of a button

***Important: Yayzy is in early versions. We want to build an app that you would love to use and are constantly taking feedback from our users. Drop your thoughts at hello@yayzy.com***

Use Yayzy to:
• Calculate your carbon footprint from your bank account 
• Understand what your carbon footprint means 
• Keep track of the impact of your purchases 
• Offset with ApplePay, Mastercard or Visa to become carbon neutral
• Get tips to reduce your impact 

Track your footprint:

Understand your impact on the environment with Yayzy. Link your bank account and instantly know the carbon footprint of your purchases. Information is translated into easy to understand units, so you know what exactly your carbon footprint means

Become carbon neutral:

Select from a list of certified carbon offsetting projects that deliver real impact and become carbon neutral with Apple Pay. Subscribe to automatically offset your monthly carbon footprint or select individual transactions to offset. It takes just £5 - £8 to offset your average monthly carbon footprint

Reduce your footprint:

Get guidance on simple things you can do to make your daily life more eco-friendly

Your data is secure: 

The Yayzy app is private by design. We use bank level security and the highest standard of encryption (256-bit SSL). Your personal data never leaves your mobile

The Yayzy app is FREE

Download Yayzy today and live the sustainable lifestyle you’ve imagined

Privacy Policy & Terms and Conditions:

Love Yayzy?

Like us on Instagram: @yayzyapp
Follow us on Twitter: @Yayzyapp

Having trouble? 
Please contact hello@yayzy.com

What’s New

Version 1.3.4

We usually like bugs but not the type we just got rid of! Small design fixes & improvements to help you, as you help the planet!

Ratings and Reviews

3.9 out of 5
41 Ratings

41 Ratings

Jesuisguz ,

Don’t want to give access to my bank in order to use

I’ve just downloaded the app and wasn’t able to see how the app functions because I am required to immediately connect my bank up in order to proceed.

I am a UX Designer and personally I think this is a bad design choice as the user hasn’t had the opportunity to explore the app, build trust with the platform etc. There is no alternative option to proceed and use a reduced functioning application.

Developer Response ,

UPDATE: Hi Jesuisguz. Once again, thanks for your feedback. We wanted to let you know that we have taken your comments seriously, and we have released a new version of the app allowing preview and basic functionality before linking the bank account. Thanks, and please do not hesitate to share any further feedback with us!
Hey Jesuisguz, 

Thank you for your valuable feedback. We completely understand your concern and agree with your feedback. We are working hard to improve the on-boarding experience. For the interim we added a short walk through of the YAYZY app before asking for the account connection and soon, as you suggested, will let users explore and use basic functionality without requiring them to link their account.

We assure you that the YAYZY app is completely secure and you are in control of your data. We never view or save your account login details, do not use your data to sell you any third-party products and you can remove account access at any time.

If you would like to provide more feedback, we would be more than happy to have a one-on-one feedback session with you. Please reach out at hello@yayzy.com if you're interested!

Thanks again for taking the time to help us improve the YAYZY app, and we hope you consider keeping YAYZY, see us improve and advance our vision on helping humankind reduce their impact on the planet.

YAYZY Product Team

Avid Radio 6 Listener ,

Very blunt instrument

I am an environmentally aware individual. I make a lot of choices based on a fair understanding of growing, processing and shipping impact. The problem is that this app just looks as some very broad categories and decides my carbon footprint from that. My utilities bills are higher because I use an 100% green electricity provider. I know my gas can’t be carbon free, as biogas is still very niche and requires land to support it. I eat meat once a week and spend £35 on 3 bottles of quality English wine instead of 6 bottle of Australian wine.

None of this can be accounted for in the App and it just seems to be a sales tactic to try to get you to offset your carbon footprint. Well carbon offsetting is a dubious method to making you feel less guilty. Instead try investing your money in more insulation for your house, maybe buy some solar panels, definitely buy an electric car (as they are way better than ICE cars) and if you don’t have space or money for the last two invest directly in a company that is creating green energy.

Developer Response ,

Hi Avid Radio 6 Listener,

Firstly, thanks for your feedback. YAYZY is still in beta and we’re iterating the app constantly so your feedback will help us make it better. Very soon your green electricity provider would be reflecting accordingly within YAYZY.

The YAYZY Carbon Footprint Algorithm reads payment data and assigns a carbon emission intensity factor on a product, company or subcategory basis. Currently, payment data does not have information on a product level but we’re working very hard on innovative ways to get product level data to increase the accuracy of the estimation. While it would be easy to request our users to input that information, we want to make it effortless and automatic to track and reduce your impact. Lot of exciting functionality coming soon.

Our true north star is to help our customers reduce their impact on the environment. We’re also going to soon release functionality that suggest activities based on consumer spending behaviour to help our customers reduce their carbon footprint. It would be great to show you our beta version and get your feedback.

You’re welcome to join our feedback slack channel to help us improve the YAYZY app, please drop us a mail on hello@yayzy.com mail if this may be of interest to you.

The YAYZY team

5Tribal ,

The best thing to come out of open banking yet!

An essential app for those trying to do their bit for the planet, Yayzy is a fantastically innovative use of open banking to identify and track the carbon footprint of your lifestyle and mitigate it through lifestyle changes, better consumer choices and high quality offsets. The app is still in development but has progressed with impressive speed in the last few months and, from the sound of things, there are plans to take it a lot further. Having spoken with the developers, it is clear there is a very ideologically driven team behind this offering and I am excited, and encouraged, to see what the end result will be. In the meantime, I encourage new users to be patient, give feedback, and enjoy Yayzy’s steady advance towards achieving its full potential.

App Privacy

The developer, YAYZY Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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