One Small Step: Climate Action

In-app purchases
193 reviews
Content rating
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

We get it: climate change can feel overwhelming. We all know that we should be doing more to address the climate crisis, but with information scattered everywhere, it’s hard to know where to start, which sources to trust, and most importantly, if the changes we make as individuals will actually have an impact.

That’s where we come in! Meet One Small Step: your personal sustainability coach. Using behavioural science, the One Small Step app makes it easy, simple & fun to make sustainable changes. You’ll gain clarity on the environmental impact of your personal choices. Get curated step-by-step programs designed to be easy & achievable & build eco-friendly habits to quickly shrink your carbon footprint.

As seen in The Guardian, ABC, Smart Company
“Green habits can be easy to foster with a little help from science.” ABC News


We’ll get you started by understanding the impact of your current lifestyle choices. Get a breakdown of your carbon footprint so you can see how you compare to the average Australian. You’ll receive a personalised sustainability roadmap to see how to reduce your carbon emissions down to the UN’s 2050 goal of 2 tonnes per year.

Using behavioural science, One Small Step makes it easy to perform impactful actions. Instead of feeling overwhelmed by information, you’ll get step-by-step programs with trusted recommendations on sustainable products. For example, if your current superannuation fund invests in fossil fuels, we’ll recommend you a program so you can switch to an ethical option. You’ll be guided every step of the way from comparing ethical funds, right through to making the switch & updating your employer.

Stay motivated on your journey to net zero carbon emissions. Through our gamified programs and Habits tool, you’ll build your confidence & skills to take control of your carbon footprint, be rewarded for taking action and see your impact in real time. Our Teams feature helps you to achieve your goals & build your momentum by completing weekly challenges with your friends, family & workmates.

We tend to think that our individual choices don’t matter, but they do when we’re acting together. Our behaviour has a flow-on effect and will influence others to do the same. All it takes is One Small Step at a time.


"Making small changes doesn't require a lot of brain power but we tend to overthink things and worry they won't actually contribute to helping the big picture. In actual fact, those smaller actions can really build a sense of motivation and encourage people to be more mindful of what they're consuming and why."

“Our ultimate goal is to reduce the cognitive barriers that prevent people from sticking to green habits, something behavioural science research has only begun to understand in the past few years.”


Our mission is to help millions of people reduce their personal carbon footprints down to the UN’s 2050 goal of 2 tonnes of CO2e per person, per year.

The goal is to grow this community to 28 million members, the same number of users as FitBit. Even if our users only partially reduce their annual footprints by 6 tonnes each, together, that achieves the same carbon impact as closing down 40 coal-fired power stations.

It’s ambitious, and you can help achieve this. The more people who use the One Small Step app, the more insights we gain into how to more effectively support you to reduce your environmental impact. We’d love to get your feedback & input on what is working for you, and what isn’t in this version of the app. You can message us through Facebook, Instagram, Twitter or emailing us at

We regularly update the collective impact our users are having on our website. To learn more, head to:
Privacy Policy:
Terms of Service:
Updated on
Mar 8, 2023

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
Location, Personal info and 5 others
Data is encrypted in transit
You can request that data be deleted
193 reviews
Steph Macc
January 30, 2022
Its a good app, but what annoys me is that there seems to be no zero option for a lot of the questions. For example, I went to fill in the section asking how often I use a disposable cup. I never do as I have a reusable travel mug, but there was no option for that so it affected my results.
33 people found this review helpful
Did you find this helpful?
Erin Conley
October 18, 2021
Very easy to use app that gives you a clear path to being greener. The only downside to it (which is not necessarily related to the app) is that some of the sustainable options cost more than other options which I guess is just the price you pay, but not everyone can afford it.
14 people found this review helpful
Did you find this helpful?
Megan Klein
February 24, 2022
this app is practical and easy to use. I enjoy reading about the different topics and seeing my own impact based on my answers when i open the app measured visually. I do wish that I could tick off an action as completed after the lessons instead of reading lessons themselves counting as action toward dropping my measured impact. if I could do it this way I would be equipped w the knowledge to complete it, and have the task sitting there as a reminder until I'm able to fulfil it.
2 people found this review helpful
Did you find this helpful?

What's new

We’re so excited to release this new and improved version of the app. Community groups now feature activity feeds:
- See your community member's progress in real-time
- Celebrate your community member's successes as they make progress
- Work together to make real change happen

Check it out and let us know what you think! Just hit send us an email at