Build habits that leave less trace on our planet.
Using SAVE yourself? Free on Android and iPhone.
SAVE has two parts that work together:
For anyone
Collect Green Points for lower-carbon everyday choices. SAVE learns your routine, suggests lower-carbon alternatives that are realistic for you, and measures progress against your own starting point — not an average. The beta is open for invites on Android and iPhone.
For organizations
Employers, cities and universities invite their community to the SAVE app, run sustainability campaigns together and see the combined results on a dashboard — never anyone's personal data. Pilots are free for early partners.
For anyone
How SAVE fits into everyday life.
Machine learning spots the choices you repeat most often, then suggests lower-carbon alternatives that actually fit your day — not generic tips.
Small swaps add up. SAVE shows how your progress builds week after week, so change feels visible instead of a one-off effort.
Your activity history is stored only on your phone. Our server processes what it needs and keeps nothing — and the language model that reads what you type never receives your name, your location or your history.
Some activities are recorded automatically. For the rest, log them yourself or just describe them in your own words — a language model turns the sentence into an entry for you to confirm. Join campaigns run by your organization from the same app.
For organizations
How SAVE works for employers, cities and universities.
Invite employees, members, students or residents with a single activation code. Everyone joins your organization in the SAVE app — start with a free pilot for up to 50 people.
Launch time-bound challenges like a bike-to-work week. People see them in the app, join with a tap and take part in everyday life.
Follow participation and behavior change on the dashboard, so you can show real results instead of counting signups or emails sent.
Your team sees combined results only — never where anyone went or what they ate. That is what makes people comfortable taking part.
Personal progress
One number that goes up as your everyday choices get lower-carbon. Each choice is weighted by how big a change it was for you — so Green Points measure your own progress, not a ranking against other people.
Pick the lower-carbon option and you earn points. In travel, walking earns the most, then cycling, then public transport. In food, eating more lower-impact meals than you usually do earns points. In shopping, a week with fewer shop trips than usual earns a point, and so do a lighter grocery basket and buying second-hand, repaired or borrowed.
Every choice is weighted by how much of a change it really was for you. Cycling to work on a wet Monday, when you would almost always drive, carries far more weight than a sunny weekend walk you would have taken anyway.
SAVE spends about three weeks learning what normal looks like for you. After that each week is scored against that routine — so someone starting from daily driving can score just as well as someone who already cycles.
Good weeks add to your lifetime total. A bad week adds nothing rather than taking points away, so one difficult month cannot undo a year of progress.
Green Points come from travel, food and shopping, and nothing ever takes them away. A car trip, a heavy meal or a new purchase earns nothing, but costs nothing either — SAVE suggests a lighter option instead.
The example below shows how a year of small swaps adds up.
an example
Scroll to see an example of habit change over time
Research & Insights
SAVE measures what it needs to cut your carbon footprint without collecting your life. How a privacy-first design keeps your data on your phone.
How AI, big data, and personalised nudging can close the green attitude–behaviour gap and drive measurable CO₂ reductions through everyday habit change.
EU households average 8–9 tCO₂e per person per year. Five domains, three that dominate. What the data says about where your carbon footprint comes from.
