AI Carbon Tracking · Private by Design
Understand your footprint.
Reshape their future.
Decarbonr turns everyday choices — what you eat, how you travel — into one clear daily number, and shows how far it is from a 1.5°C-compatible footprint. Your log stays on your iPhone.
Free trialNo accountNo ads60+ languagesiOS 17.6+
Grounded in peer-reviewed climate science
Poore & Nemecek 2018 · IPCC · Our World in Data · Ecoinvent · European Environment Agency · Carbon Trust
01 / Track your whole life
Every choice, in one number.
Point. Snap. Counted.
Photograph any meal and the AI scanner (OpenAI GPT-4o) estimates its footprint ingredient by ingredient. Or scan a barcode to pull data from OpenFoodFacts — the world's largest open food database, 2.9M+ products.
Every trip, measured.
Log journeys across 9 transport modes with real per-kilometer emission factors from the European Environment Agency and IPCC — auto-calculating distances from city pairs.
See where you stand.
Compare your footprint against national averages worldwide, and track 12+ lifestyle categories — heating, electricity, water, waste, digital, and more — each colour-coded by impact.
products in the barcode database
lifestyle categories
transport modes
languages
02 / The reason it matters
Your year, next to the 2-tonne target.
Decarbonr adds your days up into a yearly figure and sets it against the 2-tonne target and your country's average — and shows what your choices mean for the generation that inherits them.
Example: annual emissions
6.5 tonnes CO₂e
Exceeding the sustainable target by 4.5 t (225%)
Decarbonr uses 2 tonnes CO₂e a year (about 5.48 kg a day) as its reference target: a common shorthand for a personal footprint compatible with limiting warming to 1.5°C, not an official IPCC figure.
The choices we make today shape the world our children and grandchildren inherit. Decarbonr makes that link impossible to ignore — and hopeful to act on.
03 / Your 2-tonne goal
Made tangible.
Drag to see your footprint fall. Watch the ring sweep from red, through amber, to emerald as you approach the Paris-aligned 2-tonne target.
04 / Climate, made clear
Learn as you go.
A built-in library of timelines, explainers, carbon calculators, country data, and quizzes — earn eco-points and achievements as you build the habit.
Start with a free trial.
Decarbonr is a subscription with a free trial — no account, no ads, cancel anytime. AI scanning is an optional add-on.
Premium · the app
Free trial, then subscription
weekly · monthly · yearly
- ✓ Full carbon tracking — food, travel, energy & 12+ lifestyle categories
- ✓ Visual dashboard, country comparisons & temperature impact
- ✓ Personalized, country-specific reduction tips
- ✓ Goals, streaks & achievements
- ✓ Climate education library & quizzes
- ✓ Log stored on your iPhone — no account, no ads
AI Features · optional add-on
Supercharge with AI
added on top · weekly · monthly · yearly
- ✓ AI photo meal scanner (OpenAI GPT-4o) — snap a meal, get its carbon impact
- ✓ Barcode scanner — product carbon data & alternatives
- ✓ Instant CO₂e estimates for scanned items
- ✓ Ingredient-level breakdown with lower-carbon suggestions
Your log stays on your phone.
There's no account to create, your entries are stored on your iPhone rather than synced to a server, and nothing is sold. Three features use the network: a meal photo you scan goes through Decarbonr's server to OpenAI to estimate the meal, a barcode is looked up on Open Food Facts, and a city that is not in the app's built-in list is looked up online to work out a trip's distance.
Stored on your iPhone
Your entries are saved on the device, with no cloud sync.
No account
Start tracking instantly — no sign-up.
No ads or analytics
No advertising or analytics SDKs in the app.
AI scans, disclosed
A meal photo you scan goes through our server to OpenAI, only to estimate that meal.
Start with today.
Free trialNo accountNo ads60+ languagesiOS 17.6+