Decarbonr

About Decarbonr

Track your carbon footprint from what you log: meals, trips and life at home. See your day, your week and a yearly estimate next to a 2-tonne target, with insights on what weighs most, and learn how the climate works in a library of short explainers with their sources.

YOUR DAY AND YOUR YEAR

• Today's total against your daily target, with a breakdown by category
• Insights: your last 7 days against the 7 days before, your biggest source and your logging streak
• Your week, month and year as charts
• A yearly estimate once you have entries on 7 different days, next to the 2-tonne target and, for 32 countries, your country's average (fossil CO₂ per person)

FOOD
• Log food by hand: choose a food type and the amount
• Scan a barcode: the product is looked up on Open Food Facts. Decarbonr uses the product's climate data when there is some (for example from Agribalyse), otherwise a food-category average, and says which
• Photograph a meal: AI estimates its CO₂e ingredient by ingredient and suggests lower-carbon swaps
Barcode and meal-photo scanning are part of the AI add-on.

TRAVEL

• Car (petrol, diesel or electric), plane, train, bus, cruise, bike or on foot
• For flights and cruises, enter two cities and Decarbonr works out the distance
• Train trips use a country-specific emission factor

HOME AND LIFESTYLE
A Home tab with 11 trackers: heating, electricity, water, home upkeep, shopping, waste, digital use, entertainment, sport, pet care and healthcare. Each shows its last 7 days, and each entry is counted once in your daily total.

IPAD, IPHONE DUO AND APPLE WATCH

• On iPad and on the inner display of iPhone Duo, the app uses two columns and a sidebar; on the cover display it keeps the phone layout, and your place is kept when you open or close it
• The Apple Watch app shows today's total against your goal, your week and your yearly estimate, and lets you log a trip from your wrist (it needs Decarbonr on your iPhone)

CLIMATE LIBRARY
Short explainers on climate science, energy, food, transport, policy and solutions, most with links to their sources.

COUNTRY COMPARISONS
Fossil CO₂ emissions per person in 32 countries, from Our World in Data (Global Carbon Project data for 2024).

HOW THE ESTIMATES WORK
Every figure is an estimate, not a measurement. Food and travel use emission factors from published sources, listed in the app; the home and lifestyle trackers use simpler averages; meal-photo results are AI estimates.

PRIVACY

• No account: your entries are stored on your iPhone
• A meal photo is sent only when you scan a meal and agree: it goes through Decarbonr's server to OpenAI for analysis. You can turn this off in Settings
• Barcodes are looked up on Open Food Facts, and city names that are not in the app's built-in list with Apple Maps
• No ads

SUBSCRIPTIONS
Decarbonr needs a subscription after the introduction screens.
• Base Access (Premium Access plans: weekly, monthly or yearly): tracking, the dashboard, insights and yearly estimate, the Apple Watch app, the library and country comparisons. The weekly plan has a no-cost trial where offered; the paywall shows its length and the price after it.
• AI add-on (AI Features plans: weekly, monthly or yearly): everything in Base Access, plus barcode and meal-photo scanning (up to 100 barcodes and 25 meal photos a day).
Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel them in your Apple Account settings or in the app's Settings, which also has Restore Purchases.

Privacy Policy: https://decarbonr.com/privacy
Terms of Use: https://decarbonr.com/terms